TOTAL PAGEVIEWS

TRANSLATE

Saturday 18 June 2016

17-6-2016 - MONTE CORONA, ADOR - HOUSE SPARROW (MALE) (Passer domesticus)


The House sparrow (Passer domesticus) is a small passerine bird found in most parts of the world. The extent of its range makes it the most widely distributed wild bird on the planet. Because of its numbers, ubiquity, and association with human settlements, the House sparrow is culturally prominent. It is extensively, and usually unsuccessfully, persecuted as an agricultural pest. It has also often been kept as a pet and was a food item. Though it is widespread and abundant, its numbers have declined in some areas.

Population size
896-1.3 Mln
Life Span
2-23 years
Top speed
40
km/hmph
km/h mph 
Weight
24-40
goz
g oz 
Length
14-18
cminch
cm inch 
Wingspan
19-25
cminch


Thursday 16 June 2016

16-6-2016 OLIVA CAMPO - MALLARD (MALE) (Anas platyrhynchos)


Male Mallards have a dark, iridescent-green head and bright yellow bill. The gray body is sandwiched between a brown breast and black rear. Females and juveniles are mottled brown with orange-and-brown bills. Both sexes have a white-bordered, blue “speculum” patch in the wing.
Unlike larger waterfowl such as the Tundra Swan, which mate for life, Mallard pairs only stay together for a season. Courtship and pair formation begin each fall and winter. Groups of males display for a hen with a variety of behaviors, including head and tail shaking, head-bobbing, dipping, and whistling.

The female Mallard has between five and 14 light green eggs that she incubates for 30 days.

The ducklings are lead to water as soon as their soft, downy feathers are dry. ...

Most Mallard ducks live for one or two years, but some can live as long as 16 years!

Mallards swim with their tail held above the water.

16-6-2016 OLIVA CAMPO - EUROPEAN SERIN (FEMALE) (Serinus serinus)


The European Serin is a rare passage visitor to the UK, with pairs occasionally breeding in southern England and the Channel Islands. This small finch favours coniferous woodlands but will also make use of farmland, parks and gardens, with their loud abrasive song usually the first indication of their presence. They breed across the Middle East, and Central Europe, where they are partially migratory.

These stunning yellow finches are a very rare sight in the UK. Both males and females have streaky bright yellow and brown backs, wings and flanks and a forked tail. Their bellies are yellow/white in colour which becomes bright yellow on their breast. Males have bright yellow heads with black feathers on their crowns and cheeks, while females have slightly duller colouration on their heads. The bright yellow colouration of the males helps the females choose a mate as brighter plumage is an indicator of a healthy male.

16-6-2016 OLIVA CAMPO - EUROPEAN GREENFINCH (Chloris chloris)


The European greenfinch (Chloris chloris) is a small passerine bird widespread throughout Europe, North Africa and Southwest Asia. It has also been introduced into Australia, New Zealand, Uruguay, and Argentina.

The European greenfinch is similar in size and shape to a House sparrow, but is mainly green, with yellow in the wings and tail. The female and young birds are duller and have brown tones on the back. The bill is thick and conical. The song contains a lot of trilling twitters interspersed with wheezes, and the male has a "butterfly" display flight.


European greenfinches are widespread throughout Europe, North Africa, and Southwest Asia. They are mainly residents, but some northernmost populations migrate further south. Greenfinches inhabit forests, woodland edges, farmland hedges, plantations, gardens with relatively thick vegetation, and parks.

Population size
48-74 Mlnlnn
Life Span
2-13 years
Weight
25-31
goz
g oz 
Length
15
cminch
cm inch 
Wingspan
25-28
cminch

Wednesday 15 June 2016

15-6-2016 RACO DE OLLA, VALENCIA - COMMON TERN (Sterna hirundo)


The Common tern (Sterna hirundo) is a seabird that has a circumpolar distribution. it has four subspecies breeding in temperate and subarctic regions of Europe, Asia, and North America. Its large population and huge breeding range mean that this species is classed as being of least concern, although numbers in North America have declined sharply in recent decades.

Common terns occur from northern Canada to the Caribbean Sea in the south, throughout Europe, Northern Asia, the Middle East and North Africa. Outside of the mating season, these birds winter along the coasts of South America and Central America, along Africa’s coast and the Arabian Peninsula, as well as on islands in the Indian Ocean and throughout Australasia and much of Southeast Asia. They breed on sand spits, beaches and low-lying inshore islands. They also nest inland near slow-flowing rivers, and lakes in open country. This species favors areas that have close shallow waters where they can fish. During migration, they are mainly seen along coasts, at freshwater inland lakes and in estuaries. During winter, they are mostly coastal, in warm tropical and subtropical waters.


Population size
1,6-3,6 Mlnlnn
Life Span
9-29 years
Top speed
54
km/hmph
km/h mph 
Weight
110-141
goz
g oz 
Length
31-35
cminch
cm inch 
Wingspan
77-98
cminch


Known for its attractive plumage and graceful flight, Common terns have a slender body and a smoothly rounded head, and long pointed wings. Their breeding plumage is light silvery-gray upperparts and clear black outer primaries on its wingtips. Outside the breeding season, the birds keep some of their distinguishable black cap, but their forehead and face turn white. Their legs and bill turn black, losing their orange-red coloration. Male and female are similar in appearance throughout the year. Juvenile Common terns have pale grey upper wings with a dark carpal bar. The crown and nape are brown, and the forehead is ginger, wearing to white by autumn. The upper parts are ginger with brown and white scaling, and the tail lacks the adult's long outer feathers. Birds in their first post-juvenile plumage, which normally remain in their wintering areas, resemble the non-breeding adult but have a duskier crown, dark carpal bar, and often very worn plumage. By their second year, most young terns are either indistinguishable from adults, or show only minor differences such as a darker bill or white forehead.

15-6-2016 RACO DE OLLA, VALENCIA - BLACK WINGED STILT (Himantopus himantopus)


Black-winged stilts (Himantopus himantopus) are very long-legged wading birds. They are found in both warm and hot climates, feed on small aquatic creatures, and nest on the ground surface in small colonies.

Adult Black-winged stilts have long, pink legs, and a long, rather thin black bill. They are generally black above and white below, with a white head and neck. Males have a black back, often with a greenish gloss or sheen. Females' backs have a brownish hue, contrasting with the black remiges. In populations where the top of the head is normally white (at least in winter), females tend to have less black on the head and neck the entire year round, while males often have much more black, particularly in summer. This difference is not clear-cut, however, and males usually grow all-white head feathers in winter. Immature birds are grey, instead of black, and have a markedly sandy hue on their wings, with light feather fringes appearing as a whitish line in flight.


Population size
450-780 Thou
Life Span
10-20 years
Weight
165-205
goz
g oz 
Length
33-36
cminch
cm inch 
Wingspan
75
cminch
cm inch 


Black-winged stilts are found across Europe, Asia, Africa, Australia, and North, Central and South Americas. Some populations are migratory and move to the ocean coasts in winter; those in warmer regions are generally resident or short-range vagrants. Black-winged stilts breed in freshwater and brackish marshes, shallow lakes, ponds, and flooded fields. They can also be found in mountainous areas near lakes, river deltas, estuaries, coastal lagoons and marshes, salt meadows, and mudflats.


Black-winged stilts are very gregarious birds. They often gather in groups of around 20 individuals and may migrate or roost in large flocks of several thousand birds. Black-winged tilts are mainly diurnal; however, they are also adapted to nocturnal vision and may also forage even on moonless nights. Black-winged stilts feed in shallow water, wading slowly picking up their food from the water surface or sand.

Black-winged stilts are serially monogamous; they form pairs and maintain their bonds only during one breeding season. These birds may nest singly or in loose colonies and each pair defends vigorously their nest site and territory around it. The nest is a bare spot on the ground located near water. The female lays up to 4 eggs which are then incubated for about 3-4 weeks by both parents. Chicks hatch well-developed and can leave the nest within 24 hours. They fledge around 1 month after hatching and become independent 2-4 weeks later. Young Black-winged tilts become reproductively mature and start to breed when they are 1 or 2 years old.

15-6-2016 RACO DE OLLA, VALENCIA - BLACK WINGED STILT (JUVENILE) (Himantopus himantopus)


The black-winged stilt is a black and white wading bird with incredibly long legs. They live in a variety of wetlands, from marshes to coastal lagoons. They wade through the water, plucking insects from the surface.

Black-winged Stilts are carnivores. They use their sharp bills to peck and ingest only very small food such as molluscs, miniscule crustaceans, algae, flies and aquatic insects. In the wild: Both parents of young Black-winged Stilts are responsible for incubating the eggs.


The black-winged stilt is a black and white wading bird with incredibly long legs. They live in a variety of wetlands, from marshes to coastal lagoons. They wade through the water, plucking insects from the surface.

Black-winged Stilts are carnivores. They use their sharp bills to peck and ingest only very small food such as molluscs, miniscule crustaceans, algae, flies and aquatic insects. In the wild: Both parents of young Black-winged Stilts are responsible for incubating the eggs.


Behavior. With legs that are perfect for wading, the black-winged stilt rarely needs to swim in search of prey. Instead, usually forages in shallow water, even on moonless nights, when it may use a scything sweep of its feet to find its next meal.

Their name is a reference to their long, thin legs, which are ideal for wading in shallow waters while foraging for food.  They use their partially webbed toes to help them swim in deeper water to search for marine invertebrates and insects.


Black-necked stilts use a series of loud piping sounds to communicate.

In hot climates, the adults use “belly soaking” to cool themselves, the eggs or chicks, and to increase nest humidity. Stilts may make over 100 trips for water a day.

These birds distract predators using aerial maneuvers and mock injuries to protect their young. Incredibly, they are also able to swim for short periods of time using their wings. 


Black-necked Stilts are among the most stately of the shorebirds, with long rose-pink legs, a long thin black bill, and elegant black-and-white plumage that make them unmistakable at a glance. They move deliberately when foraging, walking slowly through wetlands in search of tiny aquatic prey. When disturbed, stilts are vociferous, to put it mildly, and their high, yapping calls carry for some distance. ​

Black-necked stilts sometimes participate in a "popcorn display,” which involves a group of birds gathering around a ground predator and jumping, hopping, or flapping to drive it away from their nests.

The oldest recorded Black-necked Stilt was at least 12 years, 5 months old. it was ​banded in Venezuela and refound in the Lesser Antilles.

15-6-2016 ALBUFERA, VALENCIA - SQUACCO HERON (Ardeola ralloides)


The squacco heron is a migrant, wintering in Africa. It is rare north of its breeding range. The species has been recorded in Fernando de Noronha islands, and more rarely in mainland South America, as a vagrant. This is a stocky species with a short neck, short thick bill and buff-brown back. In summer, adults have long neck feathers. Its appearance is transformed in flight, when it looks very white due to the colour of the wings.


The squacco heron's breeding habitat is marshy wetlands in warm countries. The birds nest in small colonies, often with other wading birds, usually on platforms of sticks in trees or shrubs. Three to four eggs are laid. They feed on fish, frogs and insects.

The Squacco Heron uses freshwater localities throughout Europe and the Middle East as breeding grounds to later migrate south to the Sub-Saharan African region. Non-breeding Squacco Herons share similar traits with other heron species like the Indian Pond Heron and Malagasy Pond Heron which show tawny color plumage, lighter streaking, smaller bill, and narrower wing tips.

15-6-2016 EL PALMAR, VALENCIA - PURPLE HERON (Ardea purpurea)


The purple heron (Ardea purpurea ) is a wide-ranging species of wading bird in the heron family, Ardeidae. The scientific name comes from Latin ardea "heron", and purpureus, "coloured purple". It breeds in Africa, central and southern Europe, and southern and eastern Asia. The Western Palearctic populations migrate between breeding and wintering habitats whereas the African and tropical-Asian populations are primarily sedentary, except for occasional dispersive movements.
It is similar in appearance to the more common grey heron but is slightly smaller, more slender and has darker plumage. It is also a more evasive bird, favouring densely vegetated habitats near water, particularly reed beds. It hunts for a range of prey including fish, rodents, frogs and insects, either stalking them or standing waiting in ambush.


Purple herons are colonial breeders and build a bulky nest out of dead reeds or sticks close to the water' edge among reeds or in dense vegetation. About five bluish-green eggs are laid and are incubated by both birds. The young hatch about four weeks later and fledge six weeks after that. The International Union for Conservation of Nature notes that the global population trend is downwards, largely because of the drainage of wetlands, but assesses the purple heron's conservation status as being of "least concern".


The purple heron is a large bird, 78–97 cm (31–38 in) in length with a standing height from 70 to 94 cm (28 to 37 in) and a 120–152 cm (47–60 in) wingspan. However, it is slender for its size, weighing only 0.5 to 1.35 kg (1.1 to 3.0 lb). It is somewhat smaller than the grey heron, from which it can be distinguished by its darker reddish-brown plumage, and, in adults, its darker grey back. Adults have the forehead and the crown of the head black, with a dark stripe down the back of the neck that terminates in a slender, dangling crest. This is shorter than the crest of the grey heron and does not exceed 140 mm (5.5 in). The sides of the head and the neck are buffish chestnut, with dark streaks and lines down either side of the whole the neck. The mantle is oily brown and the upper scapular feathers are elongated but not the lower ones. The rest of the upper parts and the tail are brownish grey. The front of the neck is paler than the sides and there are some elongated feathers at the base of the neck which are streaked with white, chestnut and black. The breast is chestnut brown, with some blackening at the side, and the belly and under-tail coverts are black. The brownish-yellow beak is long, straight and powerful, and is brighter in colour in breeding adults. The iris is yellow and the legs are brown at the front and yellowish behind.


The call is a harsh "frarnk", but is quieter and more high-pitched than that of the grey heron. It is generally a less noisy bird, though similar guttural sounds are heard emanating from the heronry. It is also less robust, and appears somewhat hollow-chested. Its head and neck are more slender and snake-like than the grey heron and its toes much longer. Unlike that bird, it often adopts a posture with its neck extending obliquely, and even nestlings tend to use this stance.

The purple heron has a mostly palaearctic distribution and breeds in Europe, Asia and Africa. The range of the western race extends from Portugal eastwards across much of central and southern Europe and parts of North Africa as far as Lake Balkhash in Kazakhstan. In Africa, the bird breeds in Senegal, down the east coast of Africa and in Madagascar. The eastern race extends from the Indian Subcontinent, eastwards to eastern China and the Philippines, and northwards to the basins of the Amur River and the Ussuri River at about 49°N. The southern race is restricted to Madagascar, and a small population of purple herons on the Cape Verde Islands is regarded as a separate race by some authorities.

Between August and October, birds of the western population migrate southwards to tropical Africa, returning northwards in March. Purple herons often overshoot their normal range on their return, and are vagrants to northern Europe including Britain. The eastern population is largely resident, though some birds from the northern part of the range fly southwards to Korea, Thailand and Malaysia. The African birds are resident.

The purple heron inhabits marshes, lagoons and lakes surrounded by dense vegetation. It may frequent mangrove swamps on the coast but it usually chooses freshwater habitats, particularly locations with reed beds (Phragmites ). It also visits mudflats, river banks, ditches and canals. In the Cape Verde Islands, it is more likely to be seen in the open, on arid slopes. 

15-6-2016 RACO DE OLLA, VALENCIA - LITTLE EGRET (Egretta garzetta)


Most heronries are in trees, with the majority of nests at least 25m above the ground. However, reed-bed heronries are not unusual, and they will also nest on cliffs, bushes, sometimes even on buildings of bridges.

Heronries can reach a prodigious size: one at Great Snowden's Wood, near Brede in Sussex, contained around 400 nests in 1866.

The biggest heronry in Britain is currently at Northward Hill in Kent, an RSPB reserve. Numbers here have peaked at over 200 nests, but the current total is around 150.

It's not unusual for a single tree to hold as many as 10 nests.

It's quite normal for herons, disturbed at their nest, to regurgitate their last half-digested meal, an unpleasant experience for anyone unfortunate enough to be underneath the nest.

An increasing number of British heronries now also have little egrets nesting alongside the herons.

Herons are among the earliest nesters. It's not unusual for some birds to lay their first eggs in early February, though the normal start is early March, peaking at the end of the month.

The number of herons breeding in Britain and on the Continent has been growing steadily for many years.

They suffer badly in cold winters when ponds and streams are frozen for prolonged periods. The recent run of mild weathers has helped boost the population.