TOTAL PAGEVIEWS

TRANSLATE

Thursday, 20 October 2016

5-11-2015 VALENCIA, BONAIRE - FANTAIL WARBLER (Cisticola juncidis)


The zitting cisticola or streaked fantail warbler (Cisticola juncidis ) is a widely distributed Old World warbler whose breeding range includes southern Europe, Africa (outside the deserts and rainforest), and southern Asia down to northern Australia. A small bird found mainly in grasslands, it is best identified by its rufous rump; as well, it lacks any gold on the collar and the brownish tail is tipped with white. During the breeding season, males have a zigzagging flight display accompanied by regular "zitting" calls that have been likened to repeated snips of a scissor. They build their pouch nest suspended within a clump of grass.


The zitting cisticola is 10 to 12 cm (3.9 to 4.7 in) in length. It is brown above, heavily streaked with black markings. The underparts are whitish, and the tail is broad, white-tipped and flicked frequently, giving rise to the alternative name for the species. The adult males have less crown streaking and more back marking than the females, but there are no great difference between the sexes or the eighteen geographical races. The absence of a nuchal collar separate it from the golden-headed cisticola (Cisticola exilis ). In the non-breeding season, they tend to skulk within the grass and can be hard to spot.

This species is found mainly in grassland habitats, often near water. Most populations are resident, but some East Asian populations migrate south to warmer areas in winter. In the Himalayas, they ascend to about 1,900 m (6,200 ft) during summer but are below 1,300 m (4,300 ft) in the winter. This species is a rare vagrant to northern Europe, mostly as a spring overshoot. Its European range is generally expanding, although northern populations are especially susceptible to hard winters.


Zitting cisticolas are very small insectivorous birds, sometimes found in small groups. The breeding season is associated with the rains. Two broods a year occur in many regions. Males are generally polygynous, but some are monogamous. The male builds the initial nest structure deep in the grasses, and invites females using a special display. Females that accept the male complete the nest. The nest is made by binding living leaves into the soft fabric of felted plant-down, cobwebs, and grass. The zitting cisticola's nest is a cup shape with a canopy of tied-together leaves or grasses overhead for camouflage; 3–6 eggs are laid. The female incubates the egg. The eggs hatch after about 10 days. More than one brood may be raised. Females change their mates frequently and rarely stay within the same territory, while males are less mobile, maintaining non-overlapping song-territories which shift from day to day. Females can sometimes breed in their first year.

5-11-2015 MONTE CORONA, VALENCIA - EURASIAN RED SQUIRREL (Sciurus vulgaris)


The red squirrel or Eurasian red squirrel (Sciurus vulgaris) is a species of tree squirrel in the genus Sciurus common throughout Europe and Asia. The red squirrel is an arboreal, primarily herbivorous rodent.

In Great Britain, Ireland, and in Italy numbers have decreased drastically in recent years. This decline is associated with the introduction by humans of the eastern grey squirrel (Sciurus carolinensis) from North America. However, the population in Scotland is stabilising due to conservation efforts, awareness and the increasing population of the pine marten, a European predator that selectively controls grey squirrels.


The red squirrel has a typical head-and-body length of 19 to 23 cm (7+1⁄2 to 9 in), a tail length of 15 to 20 cm (6 to 8 in), and a mass of 250 to 340 g (9 to 12 oz). Males and females are the same size. The Eurasian red squirrel is somewhat smaller than the American eastern grey squirrel, which has a head-and-body length of 25 to 30 cm (10 to 12 in) and weighs between 400 and 800 g (14 oz and 1 lb 12 oz).

The long tail helps the squirrel to balance and steer when jumping from tree to tree and running along branches and may keep the animal warm during sleep.

The red squirrel, like most tree squirrels, has sharp curved claws to help it to climb and descend broad tree trunks, thin branches, and even house walls. Its strong hind legs let it leap gaps between trees. The red squirrel also can swim.


The coat of the red squirrel varies in colour with time of year and location. There are several coat colour morphs ranging from black to red. Red coats are most common in Great Britain; in other parts of Europe and Asia different coat colours coexist within populations, much like hair colour in some human populations. The underside of the squirrel is always white-cream in colour. The red squirrel sheds its coat twice a year, switching from a thinner summer coat to a thicker, darker winter coat with noticeably larger ear-tufts (a prominent distinguishing feature of this species) between August and November. A lighter, redder overall coat colour, along with the ear-tufts (in adults) and smaller size, distinguish the red squirrel from the eastern grey squirrel. The red colour offers camouflage when seen against the bark of pine trees.


Red squirrels occupy boreal, coniferous woods in northern Europe and Siberia, preferring Scots pine, Norway spruce and Siberian pine. In western and southern Europe they are found in broad-leaved woods where the mixture of tree and shrub species provides a better year-round source of food. In most of the British Isles and in Italy, broad-leaved woodlands are now less suitable due to the better competitive feeding strategy of introduced grey squirrels.

The red squirrel is found in both coniferous forest and temperate broadleaf woodlands. The squirrel makes a drey (nest) out of twigs in a branch-fork, forming a domed structure about 25 to 30 cm in diameter. This is lined with moss, leaves, grass and bark. Tree hollows and woodpecker holes are also used. The red squirrel is a solitary animal and is shy and reluctant to share food with others. However, outside the breeding season and particularly in winter, several red squirrels may share a drey to keep warm. Social organization is based on dominance hierarchies within and between sexes; although males are not necessarily dominant to females, the dominant animals tend to be larger and older than subordinate animals, and dominant males tend to have larger home ranges than subordinate males or females.


The red squirrel eats mostly the seeds of trees, neatly stripping conifer cones to get at the seeds within, fungi, nuts (especially hazelnuts but also beech, chestnuts and acorns), berries, vegetables, garden flowers, tree sap and young shoots. More rarely, red squirrels may also eat bird eggs or nestlings. A Swedish study shows that out of 600 stomach contents of red squirrels examined, only 4 contained remnants of birds or eggs.

Excess food is put into caches called "middens", either buried or in nooks or holes in trees, and eaten when food is scarce. Although the red squirrel remembers where it created caches at a better-than-chance level, its spatial memory is substantially less accurate and durable than that of grey squirrels. Between 60% and 80% of its active period may be spent foraging and feeding. The active period for the red squirrel is in the morning and in the late afternoon and evening. It often rests in its nest in the middle of the day, avoiding the heat and the high visibility to birds of prey that are dangers during these hours. During the winter, this mid-day rest is often much briefer, or absent entirely, although harsh weather may cause the animal to stay in its nest for days at a time.

No territories are claimed between the red squirrels, and the feeding areas of individuals overlap considerably.

5-11-2015 MONTE CORONA, VALENCIA - BLACK REDSTART (MALE)


The black redstart (Phoenicurus ochruros) is a small passerine bird in the genus Phoenicurus. Like its relatives, it was formerly classed as a member of the thrush family (Turdidae), but is now known to be an Old World flycatcher (Muscicapidae). Obsolete common names include Tithys redstart, blackstart (not to be confused with the species currently known as blackstart) and black redtail.


The black redstart is 13–14.5 cm (5.1–5.7 in) in length and 12–20 g (0.42–0.71 oz) in weight, similar to the common redstart. The adult male is overall dark grey to black on the upperparts and with a black breast; the lower rump and tail are orange-red, with the two central tail feathers dark red-brown. The belly and undertail are either blackish-grey (western subspecies; see Taxonomy and systematics, above) or orange-red (eastern subspecies); the wings are blackish-grey with pale fringes on the secondaries forming a whitish panel (western subspecies) or all blackish (eastern subspecies). The female is grey (western subspecies) to grey-brown (eastern subspecies) overall except for the orange-red lower rump and tail, greyer than the common redstart; at any age the grey axillaries and underwing coverts are also distinctive (in the Common Redstart these are buff to orange-red). There are two distinct forms in first calendar year males at least in western subspecies, with the first ('carei') being similar to females and the second ('paradoxus') approaching adult males but lacking the whitish wing panel that does only develop during post-breeding moult of wing feathers in the second calendar year. This second form is much rarer than the first. 

It is a widespread breeder in south and central Europe and Asia and north-west Africa, from Great Britain and Ireland (where local) south to Morocco, east to central China. It is resident in the milder parts of its range, but north-eastern birds migrate to winter in southern and western Europe and Asia, and north Africa. It nests in crevices or holes in buildings.


In Britain, it is most common as a passage and winter visitor, with only 20–50 pairs breeding. On passage it is fairly common on the east and south coasts, and in winter on the coasts of Wales and western and southern England, with a few also at inland sites. Migrant black redstarts arrive in Britain in October or November and either move on or remain to winter, returning eastward in March or April. They also winter on the south and east coasts of Ireland.
The species originally inhabited stony ground in mountains, particularly cliffs, but since about 1900 has expanded to include similar urban habitats including bombed areas during and after World War II, and large industrial complexes that have the bare areas and cliff-like buildings it favours; in Great Britain, most of the small breeding population nests in such industrial areas. It will catch passing insects in flight, and migrants often hunt in coastal tide-wrack for flies or tiny crustaceans. Its quick ducks of head and body are robin-like, and its tail is often flicked. The male has a rattling song and a tick call.

Eastern race birds are very rare vagrants in western Europe.

Wednesday, 19 October 2016

3-11-2015 GANDIA SERPIS CAMPO - COMMON WAXBILL (Estrilda astrild)


The common waxbill (Estrilda astrild ), also known as the St Helena waxbill, is a small passerine bird belonging to the estrildid finch family. It is native to sub-Saharan Africa but has been introduced to many other regions of the world and now has an estimated global extent of occurrence of 10,000,000 km2. It is popular and easy to keep in captivity.


It is a small bird, 4 to 5 inches in length with a wingspan of 4 1/2 inches and a weight of 3/5 to 3/4 ounce. It has a slender body with short rounded wings and a long graduated tail. The bright red bill of the adult is the colour of sealing wax giving the bird its name. The plumage is mostly grey-brown, finely barred with dark brown. There is a red stripe through the eye and the cheeks and throat are whitish. There is often a pinkish flush to the underparts and a reddish stripe along the centre of the belly depending on the subspecies. The rump is brown and the tail and vent are dark. Females are similar to the males but are paler with less red on the belly. Juveniles are duller with little or no red on the belly, fainter dark barring and a black bill.

Similar species include the black-rumped, crimson-rumped and black-lored waxbills. The black-rumped waxbill is black rather than brown on the rump and has a pale vent (area underneath the tail). The crimson-rumped waxbill has a dark bill, red rump and some red on the wings and tail. The black-lored waxbill (found only in the Democratic Republic of Congo) has a black rather than red stripe through the eye.

The common waxbill has a variety of twittering and buzzing calls and a distinctive high-pitched flight-call. The simple song is harsh and nasal and descends on the last note.


Birds have often escaped from captivity or been deliberately released. Breeding populations have become established in many places where the climate is sufficiently warm and where there is a sufficient supply of grass seeds. They are now found on many islands around Africa: Saint Helena, Ascension Island, the Cape Verde Islands, São Tomé and Príncipe, Mauritius, Réunion, Rodrigues, the Seychelles and Ile Amsterdam. They may possibly be native on some of these islands. In Europe the common waxbill has become widespread in Portugal and is spreading through Spain. There are small populations on Madeira and Gran Canaria and it has recently appeared on Tenerife and the Azores. In the Americas waxbills are found in Trinidad, several parts of Brazil and there are a few on Bermuda. In the Pacific there are populations on New Caledonia, Efate Island in Vanuatu, Tahiti and the Hawaiian Islands. In Spain it has been introduced in the largest cities in the last ten years and is now quite commonly seen in Madrid, Barcelona and Valencia, as well as along the Spanish-Portuguese border.

on Madeira and Gran Canaria and it has recently appeared on Tenerife and the Azores. In the Americas waxbills are found in Trinidad, several parts of Brazil and there are a few on Bermuda. In the Pacific there are populations on New Caledonia, Efate Island in Vanuatu, Tahiti and the Hawaiian Islands. In Spain it has been introduced in the largest cities in the last ten years and is now quite commonly seen in Madrid, Barcelona and Valencia, as well as along the Spanish-Portuguese border.


The diet consists mainly of grass seeds but insects are also eaten on occasions, especially during the breeding season when more protein is needed. The waxbills typically forage in flocks which may contain hundreds or even thousands of birds. They usually feed by clinging to the stems with their long, spindly claws and picking from the flower heads but they will also search for fallen seeds on the ground. They need to drink regularly as the seeds contain little water.


The nest is a large ball of criss-crossed grass stems with a long downward-pointing entrance tube on one side. It is built in a cavity, usually low down amongst dense vegetation. A rudimentary second nest ("cock's nest") may be built on top where the male sleeps. Four to seven white eggs are laid. They are incubated for 11 to 13 days and the young birds fledge 17 to 21 days after hatching. Both parents take part in incubating the eggs and feeding the chicks. The timing of the breeding season varies in different parts of the world. Nests may be parasitized by the pin-tailed whydah which lays its eggs in the nests of estrildid finches. In captivity they will breed in an aviary and can raise four broods in a year.

18-10-2016 VILLALONGA RESERVOIR, VALENCIA - LITTLE EGRET (Egretta garzetta)


Little egrets are sociable birds and are often seen in small flocks. They are diurnal birds and feed mainly in the early morning and in the late afternoon. They use a variety of methods to procure their food; they stalk their prey in shallow water, often running with raised wings or shuffling their feet to disturb small fish, or may stand still and wait to ambush prey. Little egrets also make use of opportunities provided by cormorants disturbing fish or humans attracting fish by throwing bread into the water. On land, they walk or run while chasing their prey, feed on creatures disturbed by grazing livestock and ticks on the livestock, and even scavenge occasionally. Little egrets are silent birds in general, however, at their breeding colonies, they make various croaking and bubbling calls. When disturbed, they produce a harsh alarm call.

18-10-2015 MALDON, ESSEX - MUTE SWAN (Cygnus olor)


The mute swan (Cygnus olor) is a species of swan and a member of the waterfowl family Anatidae. It is native to much of Eurosiberia, and (as a rare winter visitor) the far north of Africa. It is an introduced species in North America, home to the largest populations outside of its native range, with additional smaller introductions in Australasia and southern Africa. The name "mute" derives from it being less vocal than other swan species. Measuring 125 to 160 cm (49 to 63 in) in length, this large swan is wholly white in plumage with an orange beak bordered with black. It is recognizable by its pronounced knob atop the beak, which is larger in males.


The mute swan was first formally named by the German naturalist Johann Friedrich Gmelin as Anas olor in 1789 and was transferred by Johann Matthäus Bechstein to the new genus Cygnus in 1803. Both cygnus and olor mean "swan" in Latin; cygnus is a variant form of cycnus, borrowing from Greek κύκνος kyknos, a word of the same meaning.

Despite its Eurasian origin, its closest relatives are the black swan of Australia and the black-necked swan of South America, not the other Northern Hemisphere swans of the genus Cygnus. The species is monotypic, with no living subspecies.


Adults of this large swan typically range from 140 to 160 cm (55 to 63 in) long, although can range in extreme cases from 125 to 170 cm (49 to 67 in), with a 200 to 240 cm (79 to 94 in) wingspan. Males are larger than females and have a larger knob on their bill. On average, this is the second largest waterfowl species after the trumpeter swan, although male mute swans can easily match or even exceed a male trumpeter in mass. Among standard measurements of the mute swan, the wing chord measures 53–62.3 cm (20.9–24.5 in), the tarsus is 10–11.8 cm (3.9–4.6 in) and the bill is 6.9–9 cm (2.7–3.5 in). The plumage is white, while the legs are dark grey. The beak of the mute swan is bright orange, with black around the nostrils and a black nail.

The mute swan is one of the heaviest extant flying birds. In several studies from Great Britain, males (known as cobs) were found to average from about 10.6 to 11.87 kg (23.4 to 26.2 lb), with a weight range of 9.2–14.3 kg (20–32 lb) while the slightly smaller females (known as pens) averaged about 8.5 to 9.67 kg (18.7 to 21.3 lb), with a weight range of 7.6–10.6 kg (17–23 lb). While the top normal weight for a big cob is roughly 15 kg (33 lb), one unusually big Polish cob weighed almost 23 kg (51 lb) and this counts as the largest weight ever verified for a flying bird, although it has been questioned whether this heavyweight could still take flight.

Young birds, called cygnets, are not the bright white of mature adults, and their bill is dull greyish-black, not orange, for the first year. The down may range from pure white to grey to buff, with grey/buff the most common. The white cygnets have a leucistic gene. Cygnets grow quickly, reaching a size close to their adult size in approximately three months after hatching. Cygnets typically retain their grey feathers until they are at least one year old, with the down on their wings having been replaced by flight feathers earlier that year.

All mute swans are white at maturity, though the feathers (particularly on the head and neck) are often stained orange-brown by iron and tannins in the water.

18-10-2015 MALDON, ESSEX - EURASIAN COOT (Fulica atra)


The Eurasian coot (Fulica atra), also known as the Common coot, or Australian coot, is a member of the rail and crake bird family, the Rallidae. It is found in Europe, Asia, Australia, New Zealand, and parts of North Africa. Similar-looking coot species are found throughout the world, with the largest variety of coot species living in South America.

The Eurasian coot is 36–38 cm (14–15 in) in length with a wing-span of 70–80 cm (28–31 in); males weigh around 890 g (31 oz) and females 750 g (26 oz). It is largely black except for the white bill and frontal shield (which gives rise to the phrase "as bald as a coot", in use as early as 1430). As a swimming species, the coot has partial webbing on its long strong toes. The sexes are similar in appearance.

The juvenile is paler than the adult, has a whitish breast, and lacks the facial shield; the adult black plumage develops when about 3–4 months old, but the white shield is only fully developed at about one year old.


Eurasian coots breed in Europe, Asia, Australia, and Africa. They have recently expanded their range into New Zealand. These birds are residents in the milder parts of their range only performing nomadic movements; however, populations from much of Asia migrate further south and west in winter as the waters freeze. Eurasian coots inhabit freshwater lakes, ponds, pools, creeks, rivers and river deltas, marshes, freshwater meadows, flooded grasslands, and freshwater, and saline lagoons.

Eurasian coots are much less secretive than most of the rail family, and frequently swim on open water or walk across waterside grasslands. They are quite aggressive birds, and strongly territorial during the breeding season, and both parents defend their nesting site. During the non-breeding season, they may form large flocks, possibly related to predator avoidance. Eurasian coots are reluctant to fly and when taking off run across the water surface with much splashing. They do the same, but without actually flying, when traveling a short distance at speed in territorial disputes or on land to escape from intruders. As with many rails, their weak flight does not inspire confidence, but on migration, usually at night, they can cover surprisingly large distances. When swimming they bob their heads, and make short dives from a little jump. When fighting other waterbirds (especially other coots), Eurasian coots attack by charging their opponent and striking them with their long legs. When feeding, these birds graze on land or in the water. In the water, they may upend in the fashion of a mallard or dive in search of food. Eurasian coots are noisy and have a wide repertoire of crackling, explosive, or trumpeting calls, often given at night.

18-10-2015 MALDON, ESSEX - BLACK TAILED GODWIT (Limosa limosa)






26-10-2015 BAHREN, GANDIA - CRIMSON SPECKLED FLUNKEY MOTH (Utetheisa pulchella)


Utetheisa pulchella, the crimson-speckled flunkey, crimson-speckled footman, or crimson-speckled moth, is a moth of the family Erebidae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae.
This common widespread species can be found in most of Europe (as a migrant), in the entire Afrotropical realm, North Africa, in the Near East and Central Asia, in the western Indomalayan realm (not known east of Myanmar.) In the United Kingdom it is only a sporadic migrant. These moths inhabit dry open places, meadows, shrublands, grasslands and parks.

The wingspan of Utetheisa pulchella can reach 29–42 mm. The front wings are narrow, white or cream coloured with a variable pattern of numerous small black spots located between the larger-sized bright red spots. Sometimes the red spots are merged to transversal bands. The hindwings are wide, white, with an irregular black border along the outer edge and two black markings in the middle of the cell. The head and thorax range from cream colour to buff yellow, with the same pattern as the wings. The antennae are long and monofiliform. The abdomen is smooth, with a white background.

Caterpillars are warty, dark brown or greyish, with tufts of greyish hairs, an orange crossline on each segment, a wide whitish line along the back and two other lateral white lines.


This species in southern Europe overwinters as a caterpillar. Pupation occurs on the ground near the host plants, usually on fallen leaves and dead vegetation, or pieces of bark and old wood. During mild winters in temperate and typically Mediterranean climates this species hibernates as pupae. Adults of this multivoltine species usually are present from March to early November in three generations a year, but in the tropics, they develop continuously. They fly both day and night and come to light. The polyphagous larvae feed on a range of herbaceous plants, mainly on forget-me-not (Myosotis), Echium, Borago officinalis, Solanum, Plantago lanceolata and Anchusa species. In the Afrotropical realm they mainly feed on Trichodesma zeylanicum, Lithospermum, Heliotropium, Trichodesma and Gossypium species.

Due to their food, the caterpillars accumulate a large amount of alkaloids, consequently also the moths are toxic and unpalatable to birds. The characteristic colouration of its wings serve as a sign of warning to their predators (aposematism).

19-10-2015 LAKELAND, THURROCK - EURASIAN COOT (Fulica atra)


The Eurasian coot is 36–38 cm (14–15 in) in length with a wing-span of 70–80 cm (28–31 in); males weigh around 890 g (31 oz) and females 750 g (26 oz). It is largely black except for the white bill and frontal shield (which gives rise to the phrase "as bald as a coot", in use as early as 1430). As a swimming species, the coot has partial webbing on its long strong toes. The sexes are similar in appearance.

The juvenile is paler than the adult, has a whitish breast, and lacks the facial shield; the adult black plumage develops when about 3–4 months old, but the white shield is only fully developed at about one year old.

Eurasian coots breed in Europe, Asia, Australia, and Africa. They have recently expanded their range into New Zealand. These birds are residents in the milder parts of their range only performing nomadic movements; however, populations from much of Asia migrate further south and west in winter as the waters freeze. Eurasian coots inhabit freshwater lakes, ponds, pools, creeks, rivers and river deltas, marshes, freshwater meadows, flooded grasslands, and freshwater, and saline lagoons.


The Eurasian coot (Fulica atra), also known as the Common coot, or Australian coot, is a member of the rail and crake bird family, the Rallidae. It is found in Europe, Asia, Australia, New Zealand, and parts of North Africa. Similar-looking coot species are found throughout the world, with the largest variety of coot species living in South America.

Eurasian coots are much less secretive than most of the rail family, and frequently swim on open water or walk across waterside grasslands. They are quite aggressive birds, and strongly territorial during the breeding season, and both parents defend their nesting site. During the non-breeding season, they may form large flocks, possibly related to predator avoidance. Eurasian coots are reluctant to fly and when taking off run across the water surface with much splashing. They do the same, but without actually flying, when traveling a short distance at speed in territorial disputes or on land to escape from intruders. As with many rails, their weak flight does not inspire confidence, but on migration, usually at night, they can cover surprisingly large distances. When swimming they bob their heads, and make short dives from a little jump. When fighting other waterbirds (especially other coots), Eurasian coots attack by charging their opponent and striking them with their long legs. When feeding, these birds graze on land or in the water. In the water, they may upend in the fashion of a mallard or dive in search of food. Eurasian coots are noisy and have a wide repertoire of crackling, explosive, or trumpeting calls, often given at night.



Eurasian coots are monogamous and for pairs. They construct a bulky nest that either floats on the water or is built in shallow water on a low or barely submerged stump or log, making a neat, large bowl. It is constructed of plant stems and leaves with a lining of finer material. Normally concealed in vegetation the nest can sometimes be placed in the open. It is built by both parents with the male collecting most of the material which is incorporated by the female. The clutch usually contains between 6 and 10 smooth and slightly glossy buff-colored eggs that are covered with black or dark brown speckles. The eggs are incubated by both parents and hatch after 21 to 24 days. The chicks are precocial and leave the nest shortly after hatching. The young are brooded by the female for the first 3 to 4 days during which time food is brought by the male. The male also builds one or more platforms that are used for roosting and brooding the chicks. On leaving the nest, the brood is sometimes split up with each parent taking care of a separate group. The young can feed themselves when they are around 30 days and fledge at 55 to 60 days. Eurasian coots normally only have a single brood each year but in some areas such as Britain, they will sometimes attempt a second brood. They first breed when they are 1-2 years old.

INCUBATION PERIOD
21-24 eggs
INDEPENDENT AGE
55-60 days
BABY NAME
chick
WEB.ANIMAL_CLUTCH_SIZE
6-10 eggs

18-10-2015 LAKELAND, THURROCK - CANADA GOOSE (Branta canadensis)


Canada geese have a white mark on their beak, near their chin. Another distinctive feature of these birds is a white U-like band on their rump. The male of a breeding pair is usually bigger. The feet, legs, and beak of Canada geese are black. They have a blackish-brown tail and blackish rump. The back and scapulars are darker brown. The breast, abdomen, and flanks vary from light gray to dark chocolate brown in color, either being mixed with a black neck or separated from it by a white ring.


The Canada goose is a native North American species, being also introduced to the UK, New Zealand, Chile, Argentina, and the Falkland Islands. These animals can be found at different elevations from alpine to coastal regions. The habitat of Canada geese is open areas with short grass. As a general rule, these animals avoid areas with obstructions such as tall grass, to be able to watch for predators. They live near water bodies such as coastlines, rivers, marshes, or ponds. They can also be frequently found in agricultural or urban areas. They breed in Canada and the northern United States while their migration reaches as far as northern Europe.


They are diurnal, being active during the day. The geese spend a lot of time grazing and foraging. Canada geese forage for food on land as well as in the water. The geese are very social animals, forming large nesting colonies meanwhile making the nests at a certain distance from each other. Pair of nesting geese can either choose to live solitary or to use the same breeding area as other pairs do. During the breeding season, Canada geese form long-term pairs. During this period, males aggressively defend the nesting site and the goslings, not allowing humans and other animals to approach it. In the autumn, these birds congregate into large flocks, consisting of family groups, to migrate southward to their wintering grounds.


Canada geese are monogamous, mating once in a lifetime, usually during the second year of their lives. Normally, the breeding season takes place in April-May, sometimes extending into June in areas with a colder climate. When the nesting site is chosen, the female builds the nest and lays 4-7 eggs whereas the male stands guard. Then the female incubates the eggs for about 28 days. As soon as hatched out, the chicks are able to feed, walk, swim and dive. They leave the nest in 1-2 days but stay with their parents for the first year of their lives. The parents help the young to find food, leading the chicks to feeding areas. Depending on the subspecies, chicks of Canada goose are able to fly within 7-9 weeks after hatching out.


The major threats to Canada goose population include toxic pesticides and lead poisoning due to swallowing lead shots. Another serious threat is oil and gas exploration in the Arctic regions where these birds breed. On the other hand, they are threatened with habitat loss because of urban and infrastructure development. Although they are hunted for food and sport around North America, this doesn’t affect the overall population of Canada goose.

The global population is estimated between 5.000.000 and 6.200.000 individuals. The European population is estimated at 1.000-5.000 breeding pairs, which equates to 2.000-10.000 mature individuals. According to the estimate of the year 2000, the population of Canada goose is around 4-5 million individuals only in North America. In the IUCN Red List, Canada goose is classified as a species of Least Concern (LC) with increasing population.

These birds are prey species for predators of their habitat. Also, they serve as seed dispersers due to feeding on a wide variety of plants.

19-10-2015 LAKELAND, THURROCK - BLACK HEADED GULL (Chroicocephalus ridibundus)


The Black-headed gull (Chroicocephalus ridibundus) is a small and one of the most abundant gulls in much of Europe and Asia, and also in eastern Canada. It displays a variety of compelling behaviors and adaptations. Some of these include removing eggshells from one's nest after hatching, begging co-ordination between siblings, differences between sexes, conspecific brood parasitism, and extra-pair paternity.

The summer adult has a chocolate-brown head (not black, although does look black from a distance), a pale grey body, black tips to the primary wing feathers, and a red bill and legs. The hood is lost in winter, leaving just two dark spots. Immature birds have a mottled pattern of brown spots over most of the body and a black band on the tail. There is no difference in plumage between the sexes. In flight, the white leading edge to the wing is a good field mark. First-year birds have a black terminal tail band, more dark areas in the wings, and, in summer, a less fully developed dark hood.


Black-headed gulls breed in much of Europe, Asia, and in coastal eastern Canada. Most of their populations are migratory and winter further south, but some birds reside in the milder westernmost areas of Europe. Some Black-headed gulls also spend the winter in northeastern North America. They breed in large reed beds or marshes, or on islands in lakes, rivers, lagoons, deltas, and estuaries. They may also occur in ponds, canals, and flood lands, nesting on the heather moors, sand dunes, or beaches. During the winter these birds are found in estuaries with sandy or muddy beaches, ploughed fields, moist grasslands, reservoirs, urban parks, farmland, and gardens.

Black-headed gulls are highly gregarious birds, both when feeding or in evening roosts; they also breed in colonies. They are rarely seen at sea far from coasts. Black-headed gulls are active during the day and feed mainly by taking prey from the surface while swimming, or by dipping the head under the surface. They also walk along the coasts and probe for aquatic prey or catch flying insects on the wings. Black-headed birds are noisy, especially in colonies, with a familiar "kree-ar" call. When feeding they utter a sharp “kek-kek”.

Tuesday, 18 October 2016

19-10-2015 ONGAR, ESSEX - EUROPEAN ROBIN (Erithacus rubecula)


The European robin (Erithacus rubecula) is a small insectivorous passerine bird. The term robin is also applied to some birds in other families with red or orange breasts. These include the American robin (Turdus migratorius ), a thrush, and the Australasian robins of the family Petroicidae.

The male and female European robins are similar in coloration, with an orange breast and face lined with grey, brown upperparts, and a whitish belly. The bill and eyes are black. Juveniles are spotted brown and white in coloration, with patches of orange gradually appearing.


European robins occur in Eurasia east to Western Siberia, south to Algeria, and on the Atlantic islands as far west as the Central Group of the Azores and Madeira. Irish and British robins are largely resident but a small minority, usually female, migrate to southern Europe during winter, a few as far as Spain. Scandinavian and Russian robins migrate to Britain and western Europe to escape the harsher winters. European robins prefer spruce woods in northern Europe, contrasting with their preference for parks and gardens in Ireland and Great Britain. These may also be found in grasslands, shrubby vegetation, hedgerows with some tall trees, orchards, and farmlands.

European robins are active during the day, however, they may also hunt insects on moonlit nights or near artificial light at night. These are generally solitary and territorial birds, and males are noted for their highly aggressive territorial behavior. They will fiercely attack other males and competitors that stray into their territories and may even attack other small birds without apparent provocation. European robins communicate using a variety of calls, including a ticking note that usually indicates anxiety or mild alarm. During the breeding season, robins produce a fluting, warbling song. Both the male and female sing during the winter, when they hold separate territories; the song then sounds more plaintive than the summer version. The female typically moves a short distance from the summer nesting territory to a nearby area that is more suitable for winter feeding. The male keeps the same territory throughout the year. During the breeding season, males usually initiate their morning song an hour before civil sunrise and usually terminate their daily singing around thirty minutes after sunset. They may also sing at night, especially in urban areas that are artificially lit during the night.


European robins are carnivores (insectivores). They prey on a wide range of terrestrial invertebrates, such as spiders, worms, and insects. In autumn and winter, they will supplement their usual diet with berries and fruit. They will also eat seed mixtures placed on bird tables.

European robins start to breed in late March. They may choose a wide variety of sites for building a nest. This can be a depression or hole, as well as the usual crevices, or sheltered banks, pieces of machinery, barbecues, bicycle handlebars, bristles on upturned brooms, discarded kettles, watering cans, flower pots, and even hats. The nest itself is composed of moss, leaves, and grass, with fine grass, hair, and feathers for the lining. The female lays 2 or 3 clutches of 5-6 eggs which are cream, buff, or white speckled or blotched with a reddish-brown color. Incubation lasts about 12-14 days, performed by the female alone. Newly hatched chicks are cared for by both parents for around 14-16 days until they are ready to fly from the nest.


European robins are widespread throughout their native range and don't face any major threats at present. However, in some areas, they suffer from illegal hunting, the use of pesticides, and severe winters.


According to the IUCN Red List, the total population size of the European robin is around 130,000,000-201,000,000 mature individuals. In Europe, the breeding population of this species consists of 58,700,000-90,500,000 pairs, which equates to 117,000,000-181,000,000 mature individuals. Currently, the European robin is classified as Least Concern (LC) on the IUCN Red List, and its numbers today are increasing.

19-10-2015 LAKELAND, THURROCK - MUTE SWAN (Cygnus olor)


The Mute swan (Cygnus olor) is known as an integral feature of urban parks as well as most of the waterways in our regions. But originally this beautiful white bird was a wild animal, not always with compatible behavior and habits for life in city parks. It is also amongst the heaviest of the world's flying birds.

The plumage of Mute swans is white, while the legs are dark grey. The beak is bright orange, with black around the nostrils and a black nail. Males are larger than females and have a larger knob on their bills. Young birds (cygnets) are not the bright white of mature adults, and their bill is dull greyish-black, not orange, for the first year. The down may range from pure white to grey to buff, with grey/buff the most common. The cygnets grow quickly, reaching a size close to their adult size in approximately 3 months after hatching. Cygnets typically retain their grey feathers until they are at least one year old, with the down on their wings having been replaced by flight feathers earlier that year. All Mute swans are white at maturity, though the feathers (particularly on the head and neck) are often stained orange-brown by iron and tannins in the water.


Mute swans breed in north-central Europe, the British Isles, and north-central Asia. They are partially migratory throughout northern latitudes in Europe and Asia, as far south as North Africa and the Mediterranean. Mute swans prefer well-sheltered bays, lakes, ponds, and open marshes.

Mute swans are usually very territorial with just a single pair on smaller lakes, though in a few locations where a large area of suitable feeding habitat is found, they can be colonial. Non-mated juveniles up to 3-4 years old commonly form larger flocks, which can total several hundred birds, often at regular traditional sites. Once the adult birds are mated they seek out their own territories and often live close to ducks and gulls. Mute swans feed during the daytime, by dabbling on the water surface and upending. While swimming they hold their neck with a graceful curve, the bill pointing downward. Mute swans are not very vocal but they do make a variety of sounds, often described as "grunting, hoarse whistling, and snorting noises." During a courtship display, they utter a rhythmic song. Mute swans usually hiss at competitors or intruders trying to enter their territory. The most familiar sound of these birds is the vibrant throbbing of the wings in flight which is unique to the species and can be heard from a range of 1 to 2 km (0.6 to 1 mi), indicating its value as a contact sound between birds in flight. Cygnets are especially vocal and communicate through a variety of whistling and chirping sounds when content, as well as a harsh squawking noise when distressed or lost. Mute swans can be very aggressive in defense of their nests and are highly protective of their mate and offspring. Most defensive acts begin with a loud hiss and, if this is not sufficient to drive off the predator or intruder, are followed by a physical attack. Swans attack by striking at the threat with bony spurs in their wings, accompanied by biting with their large bill.


Mute swans are serially monogamous and remain together for at least one season. Males may, however, have four mates, and even "divorce" to have another female. Mute swans nest on large mounds that they build with waterside vegetation in shallow water on islands in the middle or at the very edge of a lake. They often reuse the same nest each year, restoring or rebuilding it as needed. Male and female swans share the care of the nest. The breeding starts in March or early April. Nest building is done by both parents, with the male bringing the nest material to the female. Females lay 5 to 12 eggs, and incubation lasts around 36-38 days, which is done mainly by the female while her mate defends the territory. The cygnets hatch over a period of 26 hours and both parents look after the young. The female broods the cygnets and they often ride on their mother's back from the age of 10 days. Two months after hatching the young are fully feathered. They stay with their parents until the following spring and breeding season. At 3 years of age, they become reproductively mature and start to breed.