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".

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.

24-4-2016 CAMI LES FONTS OLIVA, VALENCIA - MALLARD (MALE) (Anas platyrhynchos)

The mallard (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. Mallards live in wetlands, eat water plants and small animals, and prefer to congregate in flocks of varying sizes. Unlike many waterfowl, mallards are considered an invasive species in some regions. It is a very adaptable species, being able to live and even thrive in urban areas. This species is the main ancestor of most breeds of domestic duck, and its naturally evolved wild gene pool has been genetically polluted by the domestic and feral mallard populations.

The magnificent mallard is one of the most recognizable bird species around the world. When flying, the bird displays a purplish-blue speculum, which is outlined in white. Males of this species are particularly colorful. Breeding males have a yellow beak, dark brown chest, black and white tail as well as bright green head and neck. They exhibit a white ring at the base of their neck. In addition, the sides of breeding males and most of their wings are gray. On the other hand, the plumage of female mallards and non-breeding males is less vivid and colorful. The overall plumage of female mallards is spotted with tan and brown patches, and the head is a lighter tan, showing dark bands near the crown and eyes. Females have orange-colored beaks, covered with dark spots. Females and non-breeding males generally look alike, though the latter have yellowish beaks.

Population size

aBnove 19 mlnlnn

Life Span

3-20 years

Top speed

104

km/hmph

km/h mph 

Weight

0.7-1.6

kglbs

kg lbs 

Length

50-65

cminch

cm inch 

Wingspan

81-98

cminch

cm inch 

Mallards are found across the Northern and Southern Hemispheres; in North America, their 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. Mallards are strongly migratory in the northern parts of their breeding range and winter farther south. They live in a wide range of habitats and climates, from the Arctic tundra to subtropical regions. They can be found in both fresh- and salt-water wetlands, including parks, small ponds, rivers, lakes, and estuaries, as well as shallow inlets and open seas within sight of the coastline. Water depths of less than 0.9 m (3.0 ft) are preferred, with birds avoiding areas more than a few meters deep. They are attracted to bodies of water with aquatic vegetation.

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

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.

The expression “water off a duck’s back” is a reminder of the waterproof qualities of the feathers. They are kept waterproof by regular applications of oil from the preen gland.

Scoring a duck in cricket reflects the fact that the 0 on the score sheet resembles the shape of a duck’s egg.

Mallard remain a popular sporting bird: they can be shot inland from 1 September to 31 January.

Ducklings are almost exclusively insect eaters, only turning to a mainly vegetarian diet as they get older.

Historically, commercial duck decoys caught thousands of mallard every winter, with most of the birds caught being sent to Leadenhall Market.

A duck doesn’t feed her brood, as they are capable of finding their own food as soon as they leave the nest.

Once all the eggs have hatched the duck leads the brood away to water. They never return to the nest.

A typical clutch is from nine to 13 eggs, but as many as 18, laid by the same duck, have been recorded.

Incubation takes 27-28 days, and all the eggs hatch within the same 24-hour period.

During the summer moult the drake loses his fine feathers and looks very much like the duck.

Ducks will lay their eggs in a wide variety of sites, from grassy riverbanks to the tops of tower blocks. The downy young can survive jumps from great heights.

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.

The plumage of the Little egret is normally entirely white, although there are dark forms with largely bluish-grey plumage. In the breeding season, the adult has two long plumes on the nape that form a crest. These plumes are about 150 mm (6 in) and are pointed and very narrow. There are similar feathers on the breast, but the barbs are more widely spread. There are also several elongated scapular feathers that have long loose barbs and may be 200 mm (8 in) long. During the winter the plumage is similar but the scapulars are shorter and more normal in appearance. The bill is long and slender and it and the lores are black. There is an area of greenish-grey bare skin at the base of the lower mandible and around the eye which has a yellow iris. The legs are black and the feet yellow. Juveniles are similar to non-breeding adults but have greenish-black legs and duller yellow feet, and may have a certain proportion of greyish or brownish feathers. The subspecies nigripes differs in having yellow skin between the bill and eye, and blackish feet. During the height of courtship, the lores turn red and the feet of the yellow-footed races turn red.

Little egrets are found in southern Europe, the Middle East, much of Africa, and southern Asia. Northern European populations are migratory and mostly travel to Africa although some remain in southern Europe, while some Asian populations migrate to the Philippines. The eastern subspecies is resident in Indonesia and New Guinea, while other populations inhabit Australia and New Zealand, but do not breed in the latter. Little egrets live in various habitats including the shores of lakes, rivers, canals, ponds, lagoons, marshes, and flooded land. These birds prefer open locations to dense cover. On the coast, they inhabit mangrove areas, swamps, mudflats, sandy beaches, estuaries, and reefs. Rice fields are an important habitat in Italy, and coastal and mangrove areas are important in Africa.

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.

Population size

660,000-3.1Mln

Life Span

up to 22 years

Weight

350-550

goz

g oz 

Length

55-65

cminch

cm inch 

Wingspan

88-106

cminch

24-4-2016 CAMI LES FONTS OLIVA, VALENCIA - GREY HERON (Ardea cinerea)

The Grey heron (Ardea cinerea) is a large long-legged wading bird of the heron native to Europe and Asia and also parts of Africa. It lives in wetland areas and feeds on various aquatic creatures which it catches after standing stationary beside or in the water.

The plumage of the Grey heron is largely ashy-grey above, and greyish-white below with some black on the flanks. Adults have a head and neck white with a broad black supercilium that terminates in the slender, dangling crest, and bluish-black streaks on the front of the neck. The scapular feathers are elongated and the feathers at the base of the neck are also somewhat elongated. Immature birds lack the dark stripe on the head and are generally duller in appearance than adults, with a grey head and neck, and a small, dark grey crest. The pinkish-yellow beak is long, straight, and powerful, and is brighter in color in breeding adults. The iris is yellow and the legs are brown and very long.

Grey herons occur in most parts of Europe, Asia, and Africa. Over much of their range, these birds are resident, but populations from the more northerly parts of Europe migrate southwards; some remain in Central and Southern Europe, and others travel on to Africa south of the Sahara Desert. Grey herons can be found anywhere with suitable watery habitats that can supply their food. Although most common in the lowlands, they also occur in mountain tarns, lakes, reservoirs, large and small rivers, marshes, ponds, ditches, flooded areas, coastal lagoons, estuaries, and seashore. They sometimes forage away from water in the pasture, and can even be found in desert areas, hunting for beetles and lizards.

24-4-2016 CAMI LES FONTS OLIVA, VALENCIA - EUROPEAN GREENFINCH (Chloris chloris)

Male greenish overall with a rather stout pale pinkish bill, yellow flashes on wing and sides of tail. Female is much drabber, but shares male pattern; especially note the big, dull pinkish bill and yellow wing flash. Inhabits varied wooded and forested habitats, including parks, gardens, and farmland with hedges and scattered trees. Forms flocks in autumn and winter, sometimes moving in more open country. Often visits garden feeders. Listen for chattering song, interspersed with buzzy “dzweeeeee” calls. A Eurasian native, now introduced to southeastern South America, Australia, and New Zealand.

24-4-2016 OLIVA MARJAL - BLACK WINGED STILT (JUVENILE) (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.

There are no known major threats facing Black-winged stilts at present.

24-4-2016 MONTE CORONA - SPECKLED WOOD BUTTERFLY (Pararge aegeria)