Thursday, 29 June 2017
1989 EVERGLADES NAT PARK, FLORIDA - WHITE PEACOCK BUTTERFLY (Anartia jatrophae)
Anartia jatrophae, the white peacock, is a species of butterfly found in the southeastern United States, Central America, and throughout much of South America. The white peacock's larval hosts are water hyssop (Bacopa monnieri), lemon bacopa (Bacopa caroliniensis), tropical waterhyssop (Bacopa innominata), frogfruit (Phyla nodiflora), lanceleaf frogfruit (Phyla lanceolata), and Carolina wild petunia (Ruellia caroliniana). The males of the species display a unique territorial behavior, in which they stake out a territory typically 15 meters in diameter that contains larval host plants. They perch in this area and aggressively protect it from other insects and other male white peacocks.
Wednesday, 28 June 2017
28-6-2017 SOLLANO, VALENCIA - GREY HERON (Ardea cinerea)
The grey heron (Ardea cinerea) is a long-legged wading bird of the heron family, Ardeidae, native throughout temperate Europe and Asia, and also parts of Africa. It is resident in much of its range, but some populations from the more northern parts migrate southwards in autumn. A bird of wetland areas, it can be seen around lakes, rivers, ponds, marshes and on the sea coast. It feeds mostly on aquatic creatures which it catches after standing stationary beside or in the water, or stalking its prey through the shallows.
Standing up to 1 metre (3 ft 3 in) tall, adults weigh from 1 to 2 kg (2 to 4 lb). They have a white head and neck with a broad black stripe that extends from the eye to the black crest. The body and wings are grey above and the underparts are greyish-white, with some black on the flanks. The long, sharply pointed beak is pinkish-yellow and the legs are brown.
The birds breed colonially in spring in heronries, usually building their nests high in trees. A clutch of usually three to five bluish-green eggs is laid. Both birds incubate the eggs for around 25 days, and then both feed the chicks, which fledge when 7-8 weeks old. Many juveniles do not survive their first winter, but if they do, they can expect to live for about 5 years.
In Ancient Egypt, the deity Bennu was depicted as a heron in New Kingdom artwork. In Ancient Rome, the heron was a bird of divination. Roast heron was once a specially prized dish; when George Neville became Archbishop of York in 1465, 400 herons were served to the guests.
The grey heron has a slow flight, with its long neck retracted in an S-shape. This is characteristic of herons and bitterns, and distinguishes them from storks, cranes, and spoonbills, which extend their necks. It flies with slow wing-beats and sometimes glides for short distances. It sometimes soars, circling to considerable heights, but not as often as the stork. In spring, and occasionally in autumn, birds may soar high above the heronry and chase each other, undertake aerial manoeuvres or swoop down towards the ground. The birds often perch in trees, but spend much time on the ground, striding about or standing still for long periods with an upright stance, often on a single leg.
28-6-2017 BONAIRE, VALENCIA - EUROPEAN BEE-EATER (Merops apiaster)
Spectacularly colorful and unmistakable long-billed insect-eater with a bright yellow throat, gemstone-blue belly, and flame-colored back. Found in open and semiopen country, mainly in drier areas; nests colonially in burrows dug into sand banks, often river banks. Usually seen perched on wires or circling in swallowlike flight, often in small groups; feeds by catching insects (especially bees) on the wing. Quite vocal, often giving distinctive pipping calls.
European Bee-eater feeds mainly on insects such as Hymenoptera, Diptera and Odonata, and also termites, butterflies and grasshoppers. It hunts while flying, or by sallies from exposed perches. The bees, wasps, hornets and similar species are killed by striking against a hard surface to remove the sting.
The Bee-eater is only an occasional breeder in the UK and since the first recorded nesting in Scotland in 1920, there have only been 11 documented instances of breeding.
As their name suggests, bee-eaters predominantly eat flying insects, especially bees and wasps, which are caught on the wing from an open perch.
The best time to take pictures is 2 hours after sunrise and 3 hours before sunset. At those times the lighting is soft, the tones are warm and emphasize the vivid colors of the birds. Bee-eaters are active all day long but the distribution of light and shade might be burnt under the midday sun.
It's the European Bee-eater. These technicolour wonders normally nest in southern Europe and north Africa before heading down to southern Africa in winter. Like many Bee-eaters, they like company, nesting together in small groups where they can be heard chattering away with a “prrrp prrrp prrrp” call.
Bee eaters tend to have a lifespan of approximately six years, although certain species, such as the green bee eater, can live up to 20 years when cared for in captivity.
The difficulties of migration and avoiding predators along the way affect every bird. Bee-eaters today also find it harder to find food, as there are fewer insects around as a result of pesticides. Breeding sites are also disappearing, as rivers are turned into concrete-walled canals.
The European bee-eater is a richly-coloured bird of approximately 28 cm in length and a slightly downturned thin beak. They catch large insects in flight by sorts from a perch. An exceptional eyesight allows them to locate preys at a distance up to 20 meters, so they eat flies, dragonflies, butterflies wasps and of course bees, hence its common name.
Bee-eaters nest in almost every kind of habitat but they avoid high mountain areas and dense forests. They dig their nests in slopes or banks where they build a small chamber to lay 4 to 6 eggs that will be brood for approximately 20 days. Three weeks later the newly hatched birds will show their heads out of the nest and on the fourth week they will start flying.
This species belongs to the Meropidae family distributed along southern Europe, central Russia, west of Siberia, Lower Asia, Middle East, Mediterranean Islands, North Africa and South Africa.
27-6-2017 VILLALONGA RESERVOIR, VALENCIA - LITTLE EGRET (Egretta garzetta)
The Little egret (Egretta garzetta) is small elegant heron in the family Ardeidae. As an aquatic bird, it feeds in shallow water and on land, consuming a variety of small creatures. At one time common in Western Europe, the Little heron was hunted extensively in the 19th century to provide plumes for the decoration of hats and became locally extinct in Northwestern Europe and scarce in the south. Around 1950, conservation laws were introduced in southern Europe to protect the species and their numbers began to increase.
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.
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.
Tuesday, 27 June 2017
28-5-2015 MONTE CORONA, VALENCIA - WAVE MOTH (Scopula submutata)
Scopula submutata, the Mediterranean lace border, is a moth of the family Geometridae. It is found in southern Europe, North Africa and the Near East. The habitat consists of open, dry grassland and rocky slopes.
The wingspan is 20–25 millimetres (0.79–0.98 in). There are two generations per year, with adults on wing from May to October.
The larvae feed on Thymus species and Origanum vulgare.
Sunday, 25 June 2017
25-6-2017 FONT EN CARROS, VALENCIA - LITTLE OWL (Athene noctua)
The Little owl (Athene noctua) is a small cryptically colored bird that inhabits much of the temperate and warmer parts of Europe, the Palearctic east to Korea, and North Africa. This owl is a member of the typical or true owl family Strigidae, which contains most species of owl, the other grouping being the barn owls, Tytonidae.
The Little owl has a flat-topped head, a plump, compact body, and a short tail. The facial disc is flattened above the eyes giving the bird a frowning expression. The plumage is greyish-brown, spotted, streaked, and barred with white. The underparts are pale and streaked with a darker color. The Little owl has a large head, long legs, and yellow eyes, and its white "eyebrows" give it a stern expression. Juveniles are duller and lack the adult's white crown spots. This species has a bounding flight like a woodpecker. Moult begins in July and continues to November, with the male starting before the female.
Little owls are common and widespread and not considered globally threatened. However, in some areas of their range, these birds suffer from habitat loss, farming practices, serve winters, pesticides, road traffic deaths at night, and persecution.
Little owls are widespread across Europe, Asia, and North Africa. Their range in Eurasia extends from the Iberian Peninsula and Denmark eastwards to China and southwards to the Himalayas. In Africa, they are present from Mauritania to Egypt, the Red Sea, and Arabia. These are sedentary birds which are found in open countryside in a great range of habitats. These include agricultural land with hedgerows and trees, orchards, woodland verges, parks, and gardens, as well as steppes and stony semi-deserts. They are also present in treeless areas such as dunes, and in the vicinity of ruins, quarries, and rocky outcrops. They sometimes venture into villages, suburbs, and urban areas.
Little owls are generally solitary and mainly active at dawn and dusk. They usually perch in an elevated position ready to swoop down on any small creature they notice. These birds may also pursue prey on the ground and they cache surplus food in holes or other hiding places. Little owls are territorial and the males normally remain in one territory for life. The home range, in which the bird actually hunts for food, varies with the type of habitat and time of year. If a male intrudes into the territory of another, the occupier approaches and emits its territorial calls. If the intruder persists, the occupier flies at him aggressively. If this is unsuccessful, the occupier repeats the attack, this time trying to make contact with his claws. In retreat, an owl often drops to the ground and makes a low-level escape. Little owls become more vocal at night. Their call is a querulous kiew, kiew. They may also utter various whistling or trilling calls. In the breeding season, pairs may call in duet and various yelping, chattering, or barking sounds are usually made in the vicinity of the nest.
Little owls are monogamous; pairs often remain together all year round and the bond may last until one partner dies. They usually breed in late spring. The nesting location varies with habitat and can be located in holes in trees, in cliffs, quarries, walls, old buildings, river banks, and even rabbit burrows. The female lays a clutch of 3 to 5 eggs (occasionally 2 to 8) which are broadly elliptical, white in color, and without gloss. They are incubated by the female who sometimes starts sitting after the first egg is laid. While she is incubating the eggs, the male brings food for her. The eggs hatch after 28 or 29 days. At first, the chicks are brooded by the female and the male brings in food which she distributes to them. Later, both parents are involved in hunting and feeding the young. The fledglings leave the nest at about 7 weeks and can fly a week or two later. Usually, there is a single brood but when food is abundant, there may be two. When the young disperse, they seldom travel more than about 20 kilometers (12 mi). Reproductive maturity is usually reached at 1 year of age.
25-6-2017 RAFELCOFER, VALENCIA - EUROPEAN SERIN (MALE) (Serinus serinus)
The European serin, or simply the serin (Serinus serinus), is a diminutive member of the finch family, Fringillidae. This sprightly bird is the smallest within its family, closely related to the Atlantic canary. It is characterized by its short tail and a length that spans a mere 11 to 12 centimeters. The serin's plumage is a tapestry of nature's palette, with upper parts dappled in dark-streaked greyish green and a conspicuous yellow rump. The underparts are a canvas of yellow breast and white belly, both adorned with heavy streaks.
When attempting to identify the European serin, look for the male's radiant yellow face and breast, which stand out against the greenish backdrop of its feathers. The male also boasts yellow wing bars and yellow tail sides, which can be quite helpful in distinguishing it from similar species. Both sexes share a buzzing trill of a song that resonates through their Mediterranean habitats.
The European serin is partial to open woodland and cultivated areas, often with a sprinkling of conifers. These environments provide the perfect backdrop for breeding and foraging.
This species has a breeding range that extends across southern and central Europe and into North Africa. Populations along the southern and Atlantic coasts tend to be resident, while those in the north are migratory, seeking warmer climates in southern Europe during the winter months.
Outside of the breeding season, the European serin is a sociable creature, forming flocks that may sometimes mingle with other finch species. It is an active and often conspicuous bird, its presence easily announced by its distinctive trill.
The serin's song is a distinctive buzzing trill, a sound that becomes part of the ambient music in regions where these birds are common.
The European serin weaves its nest within the shelter of a shrub or tree, where it lays a clutch of 3 to 5 eggs. The chosen breeding habitats are often areas of open woodland and cultivation, with a preference for some conifers.
The diet of the European serin is predominantly seeds, but it does not shy away from including insects during the breeding season, providing essential protein for its young.
25-6-2017 PEGO MARJAL, ALICANTE - RED VEINED DARTER DRAGONFLY (FEMALE) (Sympetrum fonscolombii)
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The red-veined darter or nomad (Sympetrum fonscolombii) is a dragonfly of the genus Sympetrum.
There is genetic and behavioural evidence that S. fonscolombii is not closely related to the other members of the genus Sympetrum and it will at some time in the future be removed from this genus.
Sympetrum fonscolombii was named under the protonym Libellula fonscolombii by the Belgian entomologist Edmond de Sélys Longchamps, in 1840, in honor of the French entomologist Étienne of Fonscolombe (hence the species name). Its name is sometimes spelt fonscolombei instead of fonscolombii but Askew (2004) gives the latter as the correct spelling.
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Sympetrum fonscolombii is a widespread and common species in much of central and southern Europe including most Mediterranean islands, North Africa, the Middle East, Mongolia, south-western Asia, including the Indian Subcontinent, the Indian Ocean Islands and Sri Lanka. In Europe it is resident in the south of its range but in some years it migrates northward. From the 1990s onwards has increasingly been found in northwest Europe, including Belgium, Sweden, Finland, Poland, Britain and Ireland. It is the only Libellulidae to be found in the Azores and it is also found on the Canary Islands and Madeira.
It breeds in a wide range of habitats including marshes, lakes, ponds, permanent and seasonal rivers. It is able to recolonize dry areas after a rainfall.
25-6-2017 PEGO MARJAL, ALICANTE - PURPLE HERON (Ardea purpurea)
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The Purple Heron (Ardea purpurea), a statuesque avian, stands with a height ranging from 70 to 94 cm and boasts a wingspan of 120 to 152 cm. Despite its grand stature, it is a slender creature, tipping the scales at a mere 0.5 to 1.35 kg. This bird is slightly smaller and more svelte than its cousin, the Grey Heron, and is adorned with darker, reddish-brown plumage.
Adult Purple Herons are distinguished by their black foreheads and crowns, with a dark stripe cascading down the back of the neck, culminating in a modest, dangling crest. Their heads and necks are a buffish chestnut, streaked with dark lines, while the mantle dons an oily brown hue. The upper parts and tail are a brownish grey, and the underparts are a mix of chestnut and black. During the breeding season, the beak of the adult brightens, and the eyes gleam with a yellow iris.
The Purple Heron is a denizen of marshes, lagoons, and lakes, often shrouded by dense vegetation. It has a penchant for freshwater habitats, particularly those with expansive reed beds of Phragmites. Coastal mangrove swamps are also within its realm, though less frequently visited.
This heron has a broad range that spans Africa, central and southern Europe, and the southern and eastern Palearctic. While the Western Palearctic populations are migratory, their African and tropical-Asian counterparts are mostly sedentary, save for occasional dispersive movements.
The Purple Heron is a creature of stealth and grace, often retreating to the sanctuary of reed beds. It exhibits a slow, deliberate flight, with its neck retracted and legs trailing behind. On land, it moves with long toes that allow it to traverse floating vegetation or even bushwalk without grasping the branches. Dawn and dusk are its preferred times for activity, with the bird often seen stalking or standing in ambush for its prey.
Purple Herons are colonial breeders, constructing bulky nests from dead reeds or sticks in close proximity to water. They lay about five bluish-green eggs, with both parents sharing incubation duties. The young emerge after approximately four weeks and take their first flight six weeks later.
25-6-2017 PEGO MARJAL, ALICANTE - LITTLE RINGED PLOVER (Charadrius dubius)
The Little Ringed Plover, Charadrius dubius, presents itself as a small and sprightly bird. Its plumage is a subtle blend of grey-brown on the back and wings, while its underparts remain a crisp white. A distinctive black neckband adorns its white breast, complementing the brown cap atop its head. A striking black mask encircles the eyes, set against a white forehead, and is accentuated by a clear yellow eye-ring—a feature unique to this species. Its bill is short and dark, and the legs exhibit a flesh-coloured hue, with all toes connected by webbing.
To distinguish the Little Ringed Plover from its close relatives, one should note the colour of its legs, the pattern on its head, and the presence of the yellow eye-ring. These characteristics set it apart from the larger Ringed Plover, which lacks these specific traits.
The preferred breeding grounds of the Little Ringed Plover are open gravel areas adjacent to freshwater sources. These include gravel pits, river edges, and islands, where vegetation is sparse or non-existent.
This bird boasts a wide range across the Palearctic, extending to northwestern Africa. It is a migratory species, retreating to the warmer climates of Africa during the winter months.
The Little Ringed Plover is known for its foraging habits on muddy terrains, where it primarily relies on sight to locate its prey. It is a ground-nesting bird, with both males and females sharing the responsibility of incubating the eggs.
The call of the Little Ringed Plover is a distinctive sound, contributing to the rich tapestry of bird songs in its habitat.
During the breeding season, these birds exhibit a fascinating mating ritual where the male bird may be observed tapping the cloaca of the female.
While similar in appearance to the larger Ringed Plover, the Little Ringed Plover can be differentiated by its leg colour, head pattern, and the conspicuous yellow eye-ring.
The diet of the Little Ringed Plover consists of insects and worms, which it diligently searches for in muddy areas.
The Little Ringed Plover is currently classified as Least Concern by the IUCN. It is also protected under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA), ensuring international efforts are made to safeguard its future.
25-6-2017 MONTE CORONA, VALENCIA - SPOTTED FLYCATCHER (Muscicapa striata)
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Spotted flycatchers are one of our summer migrants that spend the winter in Africa. They are one of the latest migrants to reach us, with a few trickling into the country from late April and most arriving from mid-May.
Despite arriving relatively late, spotted flycatchers manage to rear two broods of young before departing at the end of August. The success of the second clutch is increased by fewer eggs being laid, meaning less mouths to fill. They will nest in gardens but the nest is usually well hidden on ledges or behind climbing plants.
Spotted flycatchers prefer large flying insects, including flies and butterflies. However, if the weather is cool and insects aren’t flying, they will take smaller invertebrates from leaves and branches. If poor weather persists, many nests fail as these smaller invertebrates tend to be eaten by the parents rather than fed to the young.
In order to reduce the chances of their invertebrate prey escaping, spotted flycatchers have a series of modified feathers, like bristles, down the sides of the bill. They have also adapted to catch stinging insects. They rub the sting end on their perch to remove it, making the prey safe to eat.
The spotted flycatcher is red listed due to its rapid and consistent population decline with an 89 per cent decrease between 1967 and 2012. Evidence suggests that this is due to poor annual survival rates of first year birds, but conditions in their wintering grounds in Africa may also have contributed to the decline.
25-6-2017 MONTE CORONA, VALENCIA - MOORISH GECKO (Tarentola mauritanica)
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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).
25-6-2017 MONTE CORONA, VALENCIA - BROAD HEADED BUG (Micrelytra fossularum)
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Micrelytra fossularum is a species of European bugs belonging to the family Alydidae and type genus of the tribe Micrelytrini. It is the only representative of the monotypic genus Micrelytra.
Micrelytra fossularum can reach a length of about 10–12 millimetres (0.39–0.47 in). It has a slender body with a significant thickening in the abdomen and quite thin legs. The basic color is brown or yellowish, with two white lateral lines along the abdomen. The head is broad, similar in length and width to the pronotum and the scutellum. The compound eyes are globular and protruding. The antennal segments are alternately black and white, but the last one is red, elongated and curved. The hemelytra are greatly reduced (hence the name of the genus) and have a thin white line around the outside edge. These vestigial wings makes this bug incapable of flight. The female is bigger and larger than the male.
These true bugs form large colonies on Poaceae (mainly Dactylis glomerata and Poa annua). They feed on the nutritious fluids contained in seeds, that they reach with their proboscis. The females lay eggs in April and May. The adults can be found in August, at the end of various larval stages.
This species is present in the Mediterranean regions, mainly in Albania, Belgium, Croatia, France, Greece, Italy, Portugal, Slovenia, Spain and former Yugoslavia. It prefers xerophytic meadows.
25-6-2017 FONT EN CARROS, VALENCIA - HOUSE SPARROW (FEMALE) (Passer domesticus)
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The house sparrow (Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz). Females and young birds are coloured pale brown and grey, and males have brighter black, white, and brown markings. One of about 25 species in the genus Passer, the house sparrow is native to most of Europe, the Mediterranean Basin, and a large part of Asia. Its intentional or accidental introductions to many regions, including parts of Australasia, Africa, and the Americas, make it the most widely distributed wild bird.
The house sparrow is strongly associated with human habitation, and can live in urban or rural settings. Though found in widely varied habitats and climates, it typically avoids extensive woodlands, grasslands, polar regions, and hot, dry deserts far away from human development. For sustenance, the house sparrow routinely feeds at home and public bird feeding stations, but naturally feeds on the seeds of grains, flowering plants and weeds. However, it is an opportunistic, omnivorous eater, and commonly catches insects, their larvae, caterpillars, invertebrates and many other natural foods.
Friday, 23 June 2017
23-6-2017 MONTE CORONA, VALENCIA - IBERIAN RHINOCEROS BEETLE (Oryctes nasicornis ssp. grypus)
The European rhinoceros beetle (Oryctes nasicornis) is a large flying beetle belonging to the subfamily Dynastinae.
The rhinoceros beetles, which are also called the rhino beetles or horn beetles, belong to many genera in the subfamily Dynastinae of the family Scarabaeidae which also includes the dung beetles . They are among the largest and strongest beetles in the world, reaching more than 150 mm (6 in) in length and able to lift up to 850 times their own body weight, but are completely harmless to humans because they cannot bite or sting . Their common names refer to the characteristic horns borne on the top of the males of most species in the group resembling a rhinoceros; the horns can be as long as two-thirds the total body size and there can be other horns pointing forward from the centre of the thorax while the females are hornless .
The horns are used for dual purposes including digging underground and fighting other males for the right to mate . In fact, the sexes of these insects are usually dimorphic (except Phileurini and some Cyclocephalini and Pentodontini) with males having either horns or enlarged tubercles or foretarsi . The horn size generally provides a good indicator of the nutritional status and physical health of the beetle . The rhinoceros beetles also have rounded convex backs whose coloration varies from black to mottled greenish grey; some are shiny, almost metallic, whereas others may be covered with short fine hairs, giving them a velveteen appearance . Many species of rhinoceros beetles are believed to originate in the rainforest and forest regions of central and southern America .
The European rhinoceros beetle, Oryctes nasicornis (Linnaeus, 1758) is a large flying beetle which can reach up to 60 mm, being one of the smallest species in the subfamily Dynastinae, but is still one of the largest and heaviest beetles found in Europe, and the only representative of this subfamily found in Northern Europe . Males have a long curved horn on the head’s front top (frons), while the females are hornless . The wing cases are dark brown with a glazed appearance, giving it the impression of a shiny conker; the legs and the underside of the body are covered with short red hair; the larvae live on dead, rotten wood and can thus be found in rotting wood stumps and in sawdust; taking around two years to develop in the larval stage, the adults emerge between March to May, flying around at dusk time in Europe; the adults do not feed and live up until the Autumn.
Thursday, 22 June 2017
21-6-2017 RACO DE OLLA, VALENCIA - COMMON TERN (Sterna hirundo)
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Common Terns are found nesting on flat, poorly vegetated surfaces close to water, such as beaches, islands, and artificial substrates like floating rafts. They adapt to a variety of habitats, from the taiga to tropical shores, and avoid excessively rainy, windy, or icy areas.
This species has a wide breeding range, encompassing Europe, North Africa, Asia, and North America. It migrates to winter along the coasts of Central and South America, Africa, and southern Asia, with some populations remaining partially migratory in the Caribbean.
Common Terns are agile flyers, capable of rapid turns, hovering, and vertical take-off. They are known for their powerful, direct flight and can fly at speeds averaging 30 km/h, increasing during migration. They breed in colonies, often alongside other seabird species, and exhibit strong territorial behavior.
The Common Tern has a distinctive alarm call, a KEE-yah, and a repertoire of other vocalizations used for communication within the colony and with their chicks. Parents and chicks recognize each other's calls, aiding in maintaining family bonds.
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Breeding involves aerial courtship displays and ground rituals. Nests are shallow scrapes, sometimes lined with debris. Clutch size is typically three eggs, camouflaged with blotchy patterns. Both sexes incubate, and chicks fledge in 22–28 days. Adults are defensive of their nest and young, often harassing intruders.
The Common Tern can be confused with the Arctic Tern, Roseate Tern, and Forster's Tern, but differences in plumage details, leg and bill color, and vocalizations aid in distinguishing them.
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The diet consists mainly of fish, which they catch by plunge-diving, but may also include molluscs, crustaceans, and large insects. They forage up to 15 km from the breeding colony and may follow schools of fish or predatory fish to locate prey.
The Common Tern is classified as Least Concern, with a large population and extensive breeding range. However, threats such as habitat loss, pollution, and disturbance have led to declines in some areas, particularly in North America. Conservation efforts include habitat management and protection from human disturbance.
21-6-2017 RACO DE OLLA, VALENCIA - BLACK WINGED STILT (Himantopus himantopus)
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The Black-winged Stilt, Himantopus himantopus, is a slender wader known for its strikingly long, pink legs and contrasting black-and-white plumage. This elegant bird is a member of the avocet and stilt family, Recurvirostridae.
Adult Black-winged Stilts measure 33–36 cm in length. They possess a long, thin black bill and display a distinctive black and white coloration. The head and neck are predominantly white, with variable black markings depending on the sex and subspecies. Males typically have a glossy or greenish sheen on their black backs, while females exhibit a more brownish tinge. During flight, their long legs trail behind, and their wingbeats are steady.
These birds favor marshes, shallow lakes, and ponds as their breeding grounds. They are also known to inhabit coastal areas during migration and in the winter months.
The Black-winged Stilt has a wide range, extending across Europe, Asia, and Africa. Some populations migrate to coastal regions in winter, while others in milder climates may remain resident or engage in short-range movements.
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Black-winged Stilts are often seen foraging in shallow waters, gracefully picking insects and crustaceans from the surface. They are known to nest in small groups, sometimes alongside avocets, and exhibit a variety of courtship behaviors, including intricate displays and duets.
The flight call of the Black-winged Stilt is a sharp and clear kleek, typically heard during its aerial maneuvers.
Nests are simple bare spots on the ground near water. These birds are communal nesters and may breed in loose colonies. They have been known to breed as far north as Britain, with recent successful breeding events recorded in Southern and Northern England.
Their diet consists mainly of insects and crustaceans, which they deftly pick from the water's surface or from wet sand.
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