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Monday, 2 May 2016

1-5-2016 VILLALONGA RESERVOIR - LITTLE RINGED PLOVER (Charadrius dubius)


The little ringed plover (Charadrius dubius ) is a small plover. The genus name Charadrius is a Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate. It derives from Ancient Greek kharadrios a bird found in river valleys (kharadra, "ravine"). The specific dubius is Latin for doubtful, since Sonnerat, writing in 1776, thought this bird might be just a variant of common ringed plover.

Adult little ringed plovers have a grey-brown back and wings, a white belly and a white breast with one black neckband. They have a brown cap, a white forehead, a black mask around the eyes with white above and a short dark bill. The legs are flesh-coloured and the toes are all webbed.


This species differs from the larger ringed plover in leg colour, the head pattern, and the presence of a clear yellow eye-ring.

Their breeding habitat is open gravel areas near freshwater, including gravel pits, islands and river edges across the Palearctic including northwestern Africa. They nest on the ground on stones with little or no plant growth. Both males and females take turns incubating the eggs.

They are migratory and winter in Africa. These birds forage for food on muddy areas, usually by sight. They eat insects and worms.

This attractive small wading bird is a relatively new addition to the British breeding avifauna, first recorded nesting here in 1938.



Little Ringed Plovers are summer visitors to Britain, sometimes arriving as early as mid-March. Originally associated with gravel workings in central England, they have now colonised seasonally wet areas across the post-industrial landscapes of the north-west. In Wales and Scotland, new colonists use river gravels for nesting.

Easily confused with its commoner coastal cousin, the Ringed Plover, this species prefers fresh water. It is a daintier bird, has more subtle colours and lacks a white wing-bar when seen in flight. A good close view reveals the diagnostic yellow eye-ring.

1-5-2016 MONTE CORONA, VALENCIA - SIERRA NEVADA OCELLATED LIZARD (Timon nevadensis)


Timon nevadensis, the Sierra Nevada lizard, is a species of lizard in the family Lacertidae. It is endemic to Spain. It is sometimes considered a subspecies of the ocellated lizard.

Formerly, Timon nevadensis had been regarded as subspecies of Timon lepidus but it has been put into species rank in 2013. Its distribution range is limited to the Sierra Nevada and the Spanish east coast, reaching the Alicante Province in the north.


This is a robust and large reptile (up to 65 cm of total head-tail length, sometimes even 80-90 cm). The head is large and very distinct from the body. Like all the saurians, it has four legs that in this species are large and well developed. The eyelids are mobile (this character in addition to its legs, distinguishes a  saurian from an ophidian). The body's colour is showy. Although the general tone can be perceived as greenish, the back is covered with yellow and black scales, as well as blue ones on the sides, generally forming ocelli (rounded spots). This ocelli profusion on the animal's body gives name to the species. The belly usually has a uniform tone: whitish, grey or yellowish. Young specimens are very striking because they exhibit a dozen rows of yellowish ocelli surrounded by a dark shade on a greyish, brown or greenish background.


This species is indifferent in terms of habitat. It uses both scrub and forest areas, as well as agricultural land. It is common in open areas, with little vegetative cover and abundant shelter availability (large loose stones, stone heaps, stone walls, tree-holes, etc ...). It can also be present in parks and gardens of towns and small cities, where it climbs trees.

The ocellated lizards are diurnal, although in summer they can have some nocturnal activity avoiding the hot central hours of the day. It hibernates during the coldest months of the year, although it is possible to observe them on the sunny days of autumn and winter. It is a lone and unsociable reptile, which only mates briefly at the copulation moment and only after a somewhat violent approach to his partner. It is very agile and fast racing, being able to climb big trees very quickly. It is very distrustful and flees as soon as it feels threatened. Its diet mainly consists of insects, although it can prey on other smaller reptiles, amphibians, chickens and bird eggs, as well as on small mammals (rodents) and their offspring. They do not waste carrion and also consume wild fruits. Unlike other lizards, ocellated lizards actively search for their prey and hunt. Its bite, if handled, can be painful due to its great mandibular power.


The lizards come into heat in spring; at this moment, the males are very territorial and aggressive with other specimens, driving them out from their territories. When a female enters a male's territory, a kind of harassment situation happens (persecution and biting) to get the female to surrender and impede its escape until she agrees to copulate. Two or three months later the female deposits between 5 and 20 eggs in a small tunnel which she has dug in the ground. In summer, small lizards hatch and become sexually mature by the third year of life, after reaching thrice the size they were when they hatched.

The Sierra Nevada Ocellated Lizard is an impressive but terribly shy Lacertid. In particular, adult specimens may have flight distances of more than 20 meters. These lizards occur in high altitude mountain areas as well as in coastal dunes and agricultural land.

Sunday, 1 May 2016

30-4-2016 MONTE CORONA, VALENCIA - WHITE WAGTAIL (Motacilla alba)


Small terrestrial bird (about 18 cm or 7 in) with a characteristic long black tail, constantly wagging. Grey upperparts, white underparts and black wings with white stripes. Black head (throat and nape) and white face (forehead and flanks of the face). Black legs and bill.

Present in different types of habitats, most of them linked to water. Wet meadows, farmlands, coastal shores, banks, reservoirs, lagoons, temporary ponds, parks and gardens and even the urban environment.

Species present in the province all year round mostly as a wintering bird, although there are individuals which come to breed during the summer months and also birds in migratory passage. It breeds from April with up to three layings of 4 to 6 eggs. Nest in hollows of slopes and banks. Insectivore that forages actively, pecking on the ground, and in groups. Very linked to the ground and walker with a typical swing of the tail.

Thursday, 28 April 2016

28-4-2016 MONTE CORONA, VALENCIA - EUROPEAN GOLDFINCH (MALE) (Carduelis carduelis)


Beautiful little finch with a sharp pink bil, cherry-red face, and brilliant black-and-yellow flashes in the wings. Western birds (Europe east to far western Central Asia) have a black-and-white cowl; eastern birds (rest of Central Asia) lack this cowl, and are grayer overall, with more white on the wing. Juvenile (seen in late summer and autumn) has a plain head but is told easily by bold wing pattern. Uses a wide array of wooded and open habitats, from forests and gardens to steppe grasslands and meadows; often feeds on seeding thistles. Forms flocks in autumn and winter, gathering at food sources. Can be inconspicuous, but often detected by pleasant bubbling and twittering calls and song.

28-4-2016 MONTE CORONA, VALENCIA - WHITE WAGTAIL (Motacilla alba)


The white wagtail (Motacilla alba) is a small passerine bird in the family Motacillidae, which also includes pipits and longclaws. The species breeds in much of Europe and the Asian Palearctic and parts of North Africa. It has a toehold in Alaska as a scarce breeder. It is resident in the mildest parts of its range, but otherwise migrates to Africa. In Ireland and Great Britain, the darker subspecies, the pied wagtail or water wagtail (M. a. yarrellii) predominates; this is also called in Ireland willie wagtail, not to be confused with the Australian species Rhipidura leucophrys which bears the same common name. In total, there are between 9 and 11 subspecies of M. alba.

The white wagtail is an insectivorous bird of open country, often near habitation and water. It prefers bare areas for feeding, where it can see and pursue its prey. In urban areas it has adapted to foraging on paved areas such as car parks. It nests in crevices in stone walls and similar natural and human-made structures.

It is the national bird of Latvia and has featured on the stamps of several countries. Though it is 'of least concern', there are several threats against it, like being kept as pets and being used as food.

Wednesday, 27 April 2016

24-4-2016 MONTE CORONA, VALENCIA - WHITE WAGTAIL (Motacilla alba)


The White wagtail (Motacilla alba) is a small insectivorous bird of the open country, often near habitation and water. It prefers bare areas for feeding, where it can see and pursue its prey. In urban areas, it has adapted to foraging on paved areas such as car parks. It is the national bird of Latvia and has been featured on the stamps of several countries.

The White wagtail is a slender bird with the characteristic long, constantly wagging tail of its genus. There are a number of other subspecies, some of which may have arisen because of partial geographical isolation, such as the resident British and Irish form, the pied wagtail M. a. yarrellii, which now also breeds in adjacent areas of the neighbouring European mainland. The Pied wagtail exchanges the grey colour of the nominate form with black (or very dark grey in females), but is otherwise identical in its behaviour. Other subspecies, the validity of some of which is questionable, differ in the colour of the wings, back, and head, or other features. Some races show sexual dimorphism during the breeding season. As many as six subspecies may be present in the wintering ground in India or Southeast Asia and here they can be difficult to distinguish.

24-4-2016 CANAL LES FONTS OLIVA, VALENCIA - MALLARD (JUVENILE) (Anas platyrhynchos)


The mallard (/ˈmælɑːrd, ˈmælərd/) or wild duck (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. It has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa. This duck belongs to the subfamily Anatinae of the waterfowl family Anatidae. Males have green heads, while the females (hens or ducks) have mainly brown-speckled plumage. Both sexes have an area of white-bordered black or iridescent purple or blue feathers called a speculum on their wings; males especially tend to have blue speculum feathers. The mallard is 50–65 cm (20–26 in) long, of which the body makes up around two-thirds the length. The wingspan is 81–98 cm (32–39 in) and the bill is 4.4 to 6.1 cm (1.7 to 2.4 in) long. It is often slightly heavier than most other dabbling ducks, weighing 0.7–1.6 kg (1.5–3.5 lb). Mallards live in wetlands, eat water plants and small animals, and are social animals preferring to congregate in groups or flocks of varying sizes.


The female lays 8 to 13 creamy white to greenish-buff spotless eggs, on alternate days. Incubation takes 27 to 28 days and fledging takes 50 to 60 days. The ducklings are precocial and fully capable of swimming as soon as they hatch.
The mallard or wild duck (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa, and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa. This duck belongs to the subfamily Anatinae of the waterfowl family Anatidae.  Mallards live in wetlands, eat water plants and small animals, and are social animals preferring to congregate in groups or flocks of varying sizes.


The mallard is widely distributed across the Northern and Southern Hemispheres; in North America its range extends from southern and central Alaska to Mexico, the Hawaiian Islands, across the Palearctic, from Iceland and southern Greenland and parts of Morocco (North Africa) in the west, Scandinavia and Britain to the north, and to Siberia, Japan, and South Korea. Also in the east, it ranges to south-eastern and south-western Australia and New Zealand in the Southern hemisphere It is strongly migratory in the northern parts of its breeding range, and winters farther south.

The mallard inhabits a wide range of habitats and climates, from the Arctic tundra to subtropical regions. It is found in both fresh- and salt-water wetlands, including parks, small ponds, rivers, lakes and estuaries, as well as shallow inlets and open sea within sight of the coastline. Water depths of less than 0.9 metres (3.0 ft) are preferred, with birds avoiding areas more than a few metres deep. They are attracted to bodies of water with aquatic vegetation.

24-4-2016 CANAL LES FONTS OLIVA, VALENCIA - LITTLE EGRET (Egretta garzetta)


The Little Egret is a small white heron with attractive white plumes on crest, back and chest, black legs and bill and yellow feet. It first appeared in the UK in significant numbers in 1989 and first bred in Dorset in 1996. Its arrival followed naturally from a range expansion into western and northern France in previous decades. It is now at home on numerous south coast sites, both as a breeding species and as a winter visitor.

With its yellow feet, which are used to flush prey when feeding in shallow water, the Little Egret is a distinctive member of the heron family.

Little Egrets first bred in Britain in 1996 and since then have successfully colonised much of southern Britain and Ireland. Most of the breeding colonies have been established within existing Grey Heron colonies, the two species nesting alongside one another.

The winter distribution is also currently restricted to the southern half of Britain & Ireland, despite the fact that young birds are known to move some distance from their natal site.

24-4-2016 RACO DE OLLA, VALENCIA - BLACK WINGED STILT (Himantopus himantopus)


Adults are 33–36 cm (13–14 in) long, with long, pink legs, and a long, rather thin black bill. The birds are generally black above and white below, with a white head and neck (with a varying amount of black, species-dependent). 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.


The black-winged stilt (Himantopus himantopus) is a widely distributed, very long-legged wader in the avocet and stilt family Recurvirostridae. Its scientific name, Himantopus himantopus, is sometimes used to generalize a single, almost cosmopolitan species. Alternatively, it is restricted to the form that is widespread in Europe, Asia and Africa, which equals the nominate group of H. himantopus sensu lato. Meanwhile, the black-necked (H. mexicanus) and white-backed stilts (H. melanurus) both inhabit the Americas; the pied stilt (H. leucocephalus) ranges from Australasia and New Zealand. Today, most sources accept between one and four actual species. The taxonomic name Himantopus comes from Greek, meaning "strap-foot" or "thong-foot".

24-4-2016 MONTE CORONA, VALENCIA - MOORISH GECKO (Tarentola mauritanica)


Tarentola mauritanica, known as the common wall gecko, is a species of gecko (Gekkota) native to the western Mediterranean area of North Africa and Europe. It has been introduced to Madeira and Balearic Islands, and the Americas (in Montevideo, Buenos Aires and California). A nocturnal animal with a predominantly insectivorous diet, it is commonly observed on walls in urban environments in warm coastal areas; it can be found further inland, especially in Spain where it has a tradition of cohabitation with humans as an insect hunter. A robust species, up to 15 centimetres (5.9 in) long, its tubercules are enlarged and give the species a spiny armoured appearance.
The species was first described by Carl Linnaeus in 1758. It is also known as moorish gecko, crocodile gecko, European common gecko, and, regionally, as osga (in Portuguese), salamanquesa (in Spanish) and dragó (in Catalan).


The Common wall gecko is a small lizard native to the western Mediterranean area of North Africa and Europe. It is commonly observed on walls in urban environments, mainly in warm coastal areas. However, the Common wall gecko can be found further inland, especially in Spain where it has a tradition of cohabitation with humans as insect hunter. This little creature is brownish-grey or brown in color with darker or lighter spots. These colors change in intensity according to the light. When geckos are active by day their color is darker than during the night.

Tuesday, 26 April 2016

29-3-2015 COCHIN, INDIA - BLACK KITE (Milvus migrans)


The black kite (Milvus migrans) is a medium-sized bird of prey in the family Accipitridae, which also includes many other diurnal raptors. It is thought to be the world's most abundant species of Accipitridae, although some populations have experienced dramatic declines or fluctuations. Current global population estimates run up to 6.7 million individuals.

Unlike others of the group, black kites are opportunistic hunters and are more likely to scavenge. They spend much time soaring and gliding in thermals in search of food. Their angled wing and distinctive forked tail make them easy to identify. They are also vociferous with a shrill whinnying call.

The black kite is widely distributed through the temperate and tropical parts of Eurasia and parts of Australasia and Oceania, with the temperate region populations tending to be migratory. Several subspecies are recognized and formerly had their own English names. The European populations are small, but the South Asian population is very large.

24-4-2016 ULAL DE BOLDOVI, VALENCIA - EUROPEAN PIED FLYCATCHER (Ficedula hypoleuca)



The European pied flycatcher (Ficedula hypoleuca ) is a small passerine bird in the Old World flycatcher family. One of the four species of Western Palearctic black-and-white flycatchers, it hybridizes to a limited extent with the collared flycatcher. It breeds in most of Europe and across the Western Palearctic. It is migratory, wintering mainly in tropical Africa. It usually builds its nests in holes on oak trees.This species practices polygyny, usually bigamy, with the male travelling large distances to acquire a second mate. The male will mate with the secondary female and then return to the primary female in order to help with aspects of child rearing, such as feeding.

The European pied flycatcher is mainly insectivorous, although its diet also includes other arthropods. This species commonly feeds on spiders, ants, bees and similar prey.

The European pied flycatcher has a very large range and population size and so it is of least concern according to the International Union for Conservation of Nature (IUCN).


Life Span
11 years
Weight
13
goz
g oz 
Length
13
cminch
cm inch 
Wingspan
22
cminch

The main diet of the European pied flycatcher is insects. In fact, their name comes from their habit of catching flying insects, but they also catch insects or arthropods from tree trunks, branches, or from the ground. Studies have found that the majority of food catches were made from the ground. It was also found that airborne prey were captured more during the early part of the season (May to June) than in the later part (August to September); the converse trend appeared in prey taken from trees. There are also many overlaps in the foraging techniques with the collared flycatcher, the spotted flycatcher, and the common redstart.


This is a 12–13.5 centimetres (4.7–5.3 in) long bird. The breeding male is mainly black above and white below, with a large white wing patch, white tail sides and a small forehead patch. The Iberian subspecies iberiae (known as Iberian pied flycatcher) has a larger forehead patch and a pale rump. Non-breeding males, females and juveniles have the black replaced by a pale brown, and may be very difficult to distinguish from other Ficedula flycatchers, particularly the collared flycatcher, with which this species hybridizes to a limited extent.

The bill is black, and has the broad but pointed shape typical of aerial insectivores. As well as taking insects in flight, this species hunts caterpillars amongst the oak foliage, and will take berries. It is therefore a much earlier spring migrant than the more aerial spotted flycatcher, and its loud rhythmic and melodious song is characteristic of oak woods in spring.

They are birds of deciduous woodlands, parks and gardens, with a preference for oak trees. They build an open nest in a tree hole, and will readily adapt to an open-fronted nest box. 4–10 eggs are laid.

24-4-2016 ULAL DE BALDOVI, VALENCIA - EGYPTIAN BIRD GRASSHOPPER (Anacridium aegyptium)



Anacridium aegyptium, the Egyptian grasshopper or Egyptian locust, is a species of insect belonging to the subfamily Cyrtacanthacridinae.

Subspecies
Anacridium aegyptium var. rubrispinum Bei-Bienko, 1948 - Anacridium rubrispinum Bei-Bienko, 1948

A fairly common species, the Egyptian grasshopper is present in most of Europe, the Afrotropical realm, eastern Palearctic realm, the Near East, and North Africa, and has recently been observed in Cape Town, South Africa.

These grasshoppers inhabit trees and shrubs, scrub land, maquis, and orchards in warm and bright environments, at an elevation from sea level to 1,500 m.


Anacridium aegyptium is one of the largest European grasshoppers. Adult males grow up to 30–56 mm (1.2–2.2 in) long, while females reach 46–70 mm (1.8–2.8 in) in length. Their bodies are usually gray, brown, or olive-coloured, and their antennae are relatively short and robust. The tibiae of the hind legs are blue, while the femora are orange. The hind femora have characteristic dark marks. They are also easily identified by their characteristic eyes, which have vertical black and white stripes. Their pronota show a dorsal orange stripe and several small white spots. The wings are clear with dark marks.

This species is a folivore, essentially feeding on leaves of various plants. It is a solitary species, harmless to crops. Adults are mainly seen in August and September, but they are active throughout the year. After mating, these grasshoppers overwinter as adults. Spawning occurs in spring just under the soil surface and the nymphs appear in April. These grasshoppers undergo several molts. Nymphs differ from adults in appearance; their color varies from yellow to bright green and ocher and the wings are absent or small, as they are gradually developed after each molt.

24-4-2016 RACO DE OLLA, VALENCIA - OLD WORLD SWALLOWTAIL BUTTERFLY (Papilio machaon)


Papilio machaon, the Old World swallowtail, is a butterfly of the family Papilionidae. The butterfly is also known as the common yellow swallowtail or simply the swallowtail (a common name applied to all members of the family, but this species was the first to be given the name). It is the type species of the genus Papilio. This widespread species is found in much of the Palearctic (it is the only swallowtail in most of Europe) and in North America.

This species is named after Machaon (Ancient Greek: Μαχάων, romanized: Makháōn) a figure in Greek mythology. He was a son of Asclepius.

The imago typically has yellow wings with black vein markings, and a wingspan of 65–86 millimetres (2.6–3.4 in). The hindwings of both sexes have a pair of protruding tails which give the butterfly its common name from the resemblance to the birds of the same name. Just below each tail is one red and six blue eye spots.

In the caterpillar stage, P. machaon has a length of 45 millimetres (1.8 in). When young, the caterpillar resembles a bird dropping, giving it camouflage. The caterpillar also protects itself using a large orange fork which protrudes behind its head.

It can be distinguished from Papilio hospiton, which occurs sympatrically with it on Corsica and Sardinia, by the longer "tails" on the hindwings. It can be told apart from the Algerian species Papilio saharae only by counting the segments on the antennae.

25-4-2016 RACO DE OLLA, VALENCIA - COMMON SHELDUCK (MALE) (Tadorna tadorna)


The common shelduck (Tadorna tadorna ) is a waterfowl species of the shelduck genus, Tadorna. It is widespread and common in the Euro-Siberian region of the Palearctic, mainly breeding in temperate and wintering in subtropical regions; in winter, it can also be found in the Maghreb.
Fossil bones from Dorkovo (Bulgaria) described as Balcanas pliocaenica may actually belong to this species. More likely, they are an extinct species of Tadorna (if not a distinct genus) due to their Early Pliocene age; the present species is not unequivocally attested from the fossil record until some 2–3 million years later (Late Pliocene/Early Pleistocene).


The common shelduck resembles a small short-necked goose in size and shape. It is a striking bird, with a reddish-pink bill, pink feet, a white body with chestnut patches and a black belly, and a dark green head and neck. The wing coverts are white, the primary remiges black, and the secondaries green (only showing in flight) and chestnut. The underwings are almost entirely white. Sexes are similar, but the female is smaller, with some white facial markings, while the male is particularly crisply coloured in the breeding season, his bill bright red and bearing a prominent knob at the forehead.


Ducklings are white, with black cap, hindneck and wing and back patches. Juveniles are similarly coloured, greyish above and mostly white below, but already have the adult's wing pattern.

The call is a loud honk.

Habitat The species shows a preference for saline habitats and frequents mudflats and muddy or sandy estuaries in coastal regions, and occurs inland on saline and brackish lakes in steppe or semi-desert.  Asiatic populations also occupy freshwater rivers or marshes and other populations utilise freshwater habitats on migration. 


Diet Its diet consists predominantly of salt-water molluscs (e.g. Hydrobia spp.) as well as other aquatic invertebrates (e.g. insects, crustaceans and worms), small fish, fish spawn and plant material (e.g. algae, seeds and agricultural grain)

Breeding site The nest is commonly positioned in a tree-hollow up to 8 m above the ground or in a mammal burrow (e.g. of European rabbit Oryctolagus cuniculus).  Rarely nests may also be placed in the open or in dense vegetation up to 1 km from water. The species will also nest in artificial nest-boxes.

24-4-2016 RACO DE OLLA, VALENCIA - PIED AVOCET (Recurvirostra avosetta)


The pied avocet (Recurvirostra avosetta) is a large black and white wader in the avocet and stilt family, Recurvirostridae. They breed in temperate Europe and across the Palearctic to Central Asia then on to the Russian Far East. It is a migratory species and most winter in Africa or southern Asia. Some remain to winter in the mildest parts of their range, for example in southern Spain and southern England. The pied avocet is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.


The pied avocet (Recurvirostra avosetta) is a large black and white wader in the avocet and stilt family, Recurvirostridae. They breed in temperate Europe and across the Palearctic to Central Asia then on to the Russian Far East. It is a migratory species and most winter in Africa or southern Asia. Some remain to winter in the mildest parts of their range, for example in southern Spain and southern England. The pied avocet is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.

Adults have white plumage except for a black cap and black patches in the wings and on the back. They have long, upturned bills and long, bluish legs. It is approximately 16.5–17.75 in (41.9–45.1 cm) in length of which the bill is approximately 2.95–3.35 in (7.5–8.5 cm) and the legs are approximately 3–4 in (7.6–10.2 cm). Its wingspan is approximately 30–31.5 in (76–80 cm). Males and females look alike. The juvenile resembles the adult but with more greyish and sepia tones.


The call of the avocet is a far-carrying, liquid, melodious kluit kluit.

These birds forage in shallow brackish water or on mud flats, often scything their bills from side to side in water (a feeding technique that is unique to the avocets). They mainly eat crustaceans and insects.

Their breeding habitat is shallow lakes with brackish water and exposed bare mud. They nest on open ground, often in small groups, sometimes with other waders. Three to five eggs are laid in a lined scrape or on a mound of vegetation.

24-4-2016 RACO DE OLLA, VALENCIA - BLACK WINGED STILT (Himantopus himantopus)


Adults are 33–36 cm (13–14 in) long, with long, pink legs, and a long, rather thin black bill. The birds are generally black above and white below, with a white head and neck (with a varying amount of black, species-dependent). 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.


The breeding habitat of all these stilts is marshes, shallow lakes and ponds. Some populations are migratory and move to the ocean coasts in winter; those in warmer regions are generally resident or short-range vagrants. In Europe, the black-winged stilt is a regular spring overshoot vagrant north of its normal range, occasionally remaining to breed in northern European countries. Pairs successfully bred in Britain in 1987, and after a 27-year hiatus there were two instances of successful breeding in Southern England in 2014. 13 young were fledged in southern England in 2017.Four chicks were successfully fledged in northern England in 2022; this is believed to be the most northerly breeding success for the black-winged stilt.

These birds pick up their food from sand or water. They eat mainly insects and crustaceans.


Striking large black-and-white wader with a thin, straight bill and bright pink legs, found in wetlands with open shallow water throughout much of Africa and Eurasia, often in brackish habitats. Some populations are migratory, departing northerly breeding grounds for warmer southern regions. Often forms noisy colonies on bare ground near water. Essentially unmistakable throughout much of its range, but compare with Pied Stilt in parts of Southeast Asia. Feeds by wading in water, picking from the water surface with its needle-like bill. In flight, long pink legs stick out far beyond the tail. Calls loudly and stridently, especially when alarmed during the breeding season.

The black-winged stilt (Himantopus himantopus) is a widely distributed, very long-legged wader in the avocet and stilt family Recurvirostridae. Its scientific name, Himantopus himantopus, is sometimes used to generalize a single, almost cosmopolitan species. Alternatively, it is restricted to the form that is widespread in Europe, Asia and Africa, which equals the nominate group of H. himantopus sensu lato. Meanwhile, the black-necked (H. mexicanus) and white-backed stilts (H. melanurus) both inhabit the Americas; the pied stilt (H. leucocephalus) ranges from Australasia and New Zealand. Today, most sources accept between one and four actual species. The taxonomic name Himantopus comes from Greek, meaning "strap-foot" or "thong-foot".

Monday, 25 April 2016

24-4-2016 CAMI LES FONTS OLIVA, VALENCIA - RED EARED SLIDER TERRAPIN (Trachemys scripta ssp. elegans)


The Red-eared slider (Trachemys scripta elegans ) is a subspecies of the Pond slider, a semiaquatic turtle. It is the most popular pet turtle in the United States, is also popular as a pet across the rest of the world, and is the most invasive turtle. It is the most commonly traded turtle in the world. The Red-eared slider is also included in the list of the world's 100 most invasive species.

Red-eared sliders get their name from the small red stripe around their ears and from their ability to slide quickly off rocks and logs into the water. Their shell is divided into two sections: the upper or dorsal carapace, and the lower, ventral carapace or plastron. The color of the carapace changes depending on the age of the turtle. The carapace usually has a dark green background with light and dark, highly variable markings. In young or recently hatched turtles, it is leaf green and gets slightly darker as a turtle gets older, until it is a very dark green, and then turns a shade between brown and olive green. The plastron is always a light yellow with dark, paired, irregular markings in the center of most scutes. The head, legs, and tail are green with fine, irregular, yellow lines. The females of the species are usually larger than the males.


Red-eared sliders originated from the area around the Mississippi River and the Gulf of Mexico, in warm climates in the southeastern United States. Their native areas range from the southeast of Colorado to Virginia and Florida. Owing to their popularity as pets, Red-eared sliders have been released or escaped into the wild in many parts of the world. Feral populations are now found in Australia, Europe, Great Britain, South Africa, the Caribbean Islands, Israel, Bahrain, the Mariana Islands, Guam, and southeast and far-east Asia. In nature, these turtles inhabit areas with a source of still, warm water, such as ponds, lakes, swamps, creeks, streams, or slow-flowing rivers. They live in areas of calm water where they are able to leave the water easily by climbing onto rocks or tree trunks so they can warm up in the sun. Turtles in the wild always remain close to water unless they are searching for a new habitat or when females leave the water to lay their eggs.


Red-eared sliders are diurnal and spend most of their time in the water; however, as they are cold-blooded, they leave the water to sunbathe to regulate their temperature. They are often found sunbathing in a group or even on top of each other. Red-eared sliders do not hibernate, but actually brumate; while they become less active, they do occasionally rise to the surface for food or air. Brumation can occur to varying degrees. In the wild, Red-eared sliders brumate over the winter at the bottoms of ponds or shallow lakes. They generally become inactive in October, when temperatures fall below 10 °C (50 °F). During this time, the turtles enter a state of sopor (deep sleep), during which they do not eat or defecate. They remain nearly motionless, and the frequency of their breathing falls. Individuals usually brumate underwater, but they may also be found under banks and rocks and in hollow stumps. In warmer winter climates, they can become active and come to the surface for basking. When the temperature begins to drop again, however, they quickly return to a brumation state. Slider turtles have very sharp vision. Their eyes have receptors that can see ultraviolet, violet, blue, green, and red light. In order to communicate with each other, they use eye-rolling, vibrations, touches, and displays.


Red-eared sliders are omnivores and feed on fish, crayfish, worms, snails, tadpoles, crickets, aquatic insects, and aquatic plants.

Little is known about the mating system in Red-eared sliders. They usually breed between March and July. During courtship, the male swims around the female and flutters or vibrates the backside of his long claws on and around her face and head, possibly to direct pheromones towards her. After mating, the female spends some time basking to keep her eggs warm. A female can lay between 2 and 30 eggs depending on body size and other factors. One female can lay up to 5 clutches in the same year, and clutches are usually spaced 12-36 days apart. During the last weeks of gestation, the female spends less time in the water and smells and scratches at the ground, indicating she is searching for a suitable place to lay her eggs. She excavates a hole, using her hind legs, and lays her eggs in it. Incubation takes 59-112 days. A new hatchling breaks open its egg with its egg tooth, which falls out about an hour after hatching. This egg tooth never grows back. Hatchlings may stay inside their eggshells after hatching for the first day or two and begin their independence from the day they emerge from their eggs. Young turtles reach reproductive maturity at five years of age, but they are unable to mate.