BIRDWALKERMONDAY

Sunday, 18 June 2017

18-6-2017 VILLALONGA RESERVOIR, VALENCIA - EUROPEAN SERIN (MALE) (Serinus serinus)

Saturday, 17 June 2017

16-6-2017 PETROLA, ALBACETE - CORN BUNTING (Emberiza calandra)

The corn bunting (Emberiza calandra ) is a passerine bird in the bunting family Emberizidae, a group now separated by most modern authors from the finches, Fringillidae. This is a large bunting with heavily streaked buff-brown plumage. The sexes are similar but the male is slightly larger than the female. Its range extends from Western Europe and North Africa across to northwestern China.

This is an unusual bunting because the plumages of the sexes are similar in appearance, though the male is approximately 20% larger than the female. This large bulky bunting is 16–19 cm long, with a conspicuously dark eye and yellowish mandibles. Males lack any showy colours, especially on the head, which is otherwise typical of genus Emberiza. Both sexes look something like larks, being streaked grey-brown above with whitish underparts. The underparts are streaked over the flanks and breast, and the streaking forms gorget around the throat. The lesser wing coverts are distinctively dark and white-tipped. The tail is plain brown.

The song of the male is a repetitive metallic sound, usually likened to jangling keys, which is given from a low bush, fence post or telephone wires.

15-6-2017 MONTE CORONA, VALENCIA - LARGE PSAMMODROMUS LIZARD (Psammodromus algirus)

Psammodromus algirus, known commonly as the Algerian psammodromus or the large psammodromus, is a species of lizard in the family Lacertidae. The species is found in southwestern Europe and northwestern Africa.

Subspecies

There are four subspecies:

Psammodromus algirus algirus (Linnaeus, 1758)

Psammodromus algirus doriae Bedriaga, 1886

Psammodromus algirus nollii Fischer, 1887

Psammodromus algirus ketamensis Galán, 1931

Psammodromus algirus is found in North Africa (Morocco, Algeria, and Tunisia) and in Southwestern Europe (Iberian Peninsula: Portugal, Spain, Andorra, Gibraltar; southernmost France, and Italy near Lampedusa).

The IUCN assessment from 2009 treats Psammodromus algirus nollii and Psammodromus algirus ketamensis as full species and restricts Psammodromus algirus to North Africa.

P. algirus typically occurs in dense bushy vegetation, but it can also venture to more open areas. It can be found at at elevations up to 2,600 m (8,500 ft) above sea level, but it is more common at lower elevations.

Psammodromus algirus mainly feeds on terrestrial arthropods, specifically Orthoptera, Formicidae, Coleoptera, Hemiptera, and Araneae.

P. algirus is threatened by habitat loss.

P. algirus commonly reaches a snout–vent length of about 7.5 cm (3.0 in), occasionally 9 cm (3.5 in). The tail is 2–3 times the body length. Dorsal colouration is usually metallic brownish with a pair of conspicuous white or yellowish stripes on both sides.

16-6-2017 LAGUNA DE HOYA ROSA, ALBACETE - WHITE HEADED DUCK (Oxyura leucocephala)

The White-headed Duck, Oxyura leucocephala, presents a striking figure with its distinctive plumage and stout build. Males are adorned with a white head contrasted by a black crown, a blue bill, and a body cloaked in shades of reddish-grey. Females, on the other hand, exhibit a more subdued palette with a dark bill and less vibrant colouring.

Upon encountering this species, one can identify the male by its white head, black cap, and neck, and a blue bill, while the female can be recognized by her grey-brown body, white face, and darker bill and cap. These ducks measure between 43–48 cm in length and weigh approximately 580–750 g.

The White-headed Duck favors lakes with open water and dense vegetation along the margins, which provide essential cover and nesting sites. These habitats include natural lakes and ponds as well as man-made water bodies.

This species has a breeding range that spans from Spain and North Africa to western and central Asia. Sightings have been reported north of their typical range, though the status of these observations is often uncertain due to the potential for escapees from captivity.

The White-headed Duck is an adept diver and swimmer, often opting to escape threats by swimming rather than taking flight. It exhibits a preference for aquatic environments where it can forage and seek refuge.

An omnivorous diet characterizes this species, with a strong inclination towards vegetable matter. They forage by diving and swimming underwater, and display a notable reluctance to fly.

The International Union for Conservation of Nature (IUCN) has classified the White-headed Duck as "Endangered." Populations have seen a significant decline over the past decade, primarily due to habitat loss and hunting. Additionally, the Spanish population faces genetic dilution from interbreeding with the introduced Ruddy Duck (Oxyura jamaicensis), prompting conservation efforts to eradicate the non-native species from western Europe. The species is also protected under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA).

16-6-2017 PETROLA, ALBACETE - GREATER FLAMINGO (Phoenicopterus roseus)

16-6-2017 CORAL RUBIO, ALBACETE - WHITE HEADED DUCK (Oxyura leucocephala)

The white-headed duck (Oxyura leucocephala ) is a small diving duck some 45 cm (18 in) long. The male has a white head with black crown, a blue bill, and reddish-grey plumage. The female has a dark bill and rather duller colouring. Its breeding habitat is lakes with open water and dense vegetation at the margin. It dives under water and feeds on aquatic vegetation as well as some animal matter. It is more likely to swim away from a perceived threat than to fly. This duck is known from Spain, North Africa, Western Asia and Central Asia. Populations are declining, mostly due to loss of habitat and pollution, and the International Union for Conservation of Nature has rated the bird's status as "endangered".

Adult males have a grey and reddish body, a blue bill and a largely white head with a black cap and neck. Adult females have a grey-brown body with a white face and a darker bill, cap, and cheek stripe. Length is 43–48 cm (17–19 in) and weight is 580–750 g (1.28–1.65 lb).

This duck breeds in Spain and North Africa, with a larger population in western and central Asia. Their breeding habitat is large tracts of open water, such as lakes and ponds including artificial water bodies, with dense stands of aquatic plants to provide shelter and nesting sites. Individuals are fairly frequently reported well north of their breeding range, but as with many wildfowl, the status of these extralimital records is clouded by the possibility of escapes from collections.

These birds dive and swim under water. They are omnivorous, with vegetable matter predominating. They are reluctant to fly, preferring to swim for cover.

This duck is considered endangered due to a large reduction in populations in the last 10 years. Most of this decline is due to habitat loss and hunting, but interbreeding of the Spanish population with the introduced ruddy duck (Oxyura jamaicensis ) is a more recent threat. This has led to the attempted eradication of the American species from western Europe.

The white-headed duck is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies, and the International Union for Conservation of Nature has rated the bird's conservation status as being "endangered".

Friday, 16 June 2017

16-6-2017 PETROLA, ALBACETE - BLACK WINGED STILT (Himantopus himantopus)

16-6-2017 CORAL RUBIO, ALBACETE - NORTHERN LAPWING (Vanellus vanellus)

Northern lapwings are found throughout temperate Eurasia. They are highly migratory over most of their extensive range, wintering further south as far as North Africa, northern India, Nepal, Bhutan, and parts of China. However, lowland breeders in the westernmost areas of Europe are residents. Northern lapwings inhabit wet grasslands, meadows, swampy heaths, bogs, marshes, other wetlands, and cultivated areas.

Outside of the breeding season, Northern lapwings are very gregarious birds. They feed in mixed flocks with Golden plovers and Black-headed gulls and often migrate in large flocks. In winter, these birds like to form huge flocks on open land, particularly arable land, and mud flats. Northern plovers prefer to feed at night when there is moonlight. They are very vocal birds in the breeding season, constantly calling during the crazed tumbling display flight performed by the male. The typical contact call of these birds is a loud, shrill ‘pee-wit’ from which they get their other name of peewit. Displaying males usually make a wheezy ‘pee-wit, wit wit, eeze wit’ during their display flight; these birds also make squeaking or mewing sounds.

16-6-2017 BONETE, ALBACETE - GREATER FLAMINGO (Phoenicopterus roseus)

16-6-2017 CORAL RUBIO, ALBACETE - PIED AVOCET (Recurvirostra avosetta)

The pied avocet, Recurvirostra avosetta, presents a striking silhouette with its bold black and white plumage. This large wader, belonging to the avocet and stilt family, Recurvirostridae, is adorned with a distinctive black cap and black markings on its wings and back, contrasting sharply against its otherwise white body. The species is noted for its elegant, upturned bill and elongated, bluish legs, which add to its graceful demeanor.

Adult pied avocets measure approximately 16.5–17.75 inches in length, with a wingspan stretching around 30–31.5 inches. Their long legs and upturned bills, measuring about 2.95–3.35 inches and 3–4 inches respectively, are key features for identification. Both sexes appear similar, while juveniles can be distinguished by their more greyish and sepia tones.

These birds favor shallow lakes with brackish water and exposed mudflats, which provide ideal foraging and breeding grounds.

The pied avocet breeds across temperate Europe and extends across the Palearctic to Central Asia and the Russian Far East. It is a migratory species, with most individuals wintering in Africa or southern Asia. Some, however, remain in the milder parts of their range during winter, such as southern Spain and southern England.

Thursday, 15 June 2017

15-6-2017 VILLALONGA RESERVOIR, VALENCIA - BARN SWALLOW (Hirundo rustica)

The Barn swallow (Hirundo rustica) is the most widespread species of swallow in the world. In fact, it has the largest natural distribution of any of the world's passerines, ranging over 251 million square kilometers globally. In Anglophone Europe it is just called the swallow; in northern Europe, it is the only common species called a "swallow" rather than a "martin".

The Barn swallow is a distinctive songbird with blue upperparts and a long, deeply forked tail. There is a line of white spots across the outer end of the upper tail. The female is similar in appearance to the male, but the tail streamers are shorter, the blue of the upperparts and breast band is less glossy, and the underparts paler. The juvenile is browner and has a paler rufous face and whiter underparts. It also lacks the long tail streamers of the adult.

Barn swallows are found in Europe, Asia, Africa, and the Americas. These birds are long-distance migrants and their wintering grounds cover much of the Southern Hemisphere as far south as central Argentina, the Cape Province of South Africa, and northern Australia. The preferred habitat of Barn swallows is open country with low vegetation, such as pasture, meadows, and farmland, preferably with nearby water. These birds avoid heavily wooded or precipitous areas and densely built-up locations. On their wintering grounds, Barn swallows avoid only dense forests and deserts. They are most common in open, low vegetation habitats, such as savanna and ranch land, and in Venezuela, South Africa, and Trinidad and Tobago the birds are particularly attracted to burnt or harvested sugarcane fields and the waste from the cane.

Barn swallows are gregarious birds and in the absence of suitable roost sites, they sometimes roost on wires where they are more exposed to predators. Individual birds tend to return to the same wintering locality each year and congregate from a large area to roost in reed beds. These roosts can be extremely large and are thought to be a protection from predators. Barn swallows typically feed by day in open areas 7-8 m (23-26 ft) above shallow water or the ground often following animals, humans, or farm machinery to catch disturbed insects; they may also pick prey items from the water surface, walls, and plants. During the breeding, season Barn swallows hunt in pairs, but otherwise form often large flocks. These birds are usually fairly quiet on the wintering grounds. At other times they communicate with constant twittering and chattering. The song of the male Barn swallow is a cheerful warble, often ending with 'su-seer'. Other calls include 'witt' or 'witt-witt' and a loud 'splee-plink' when excited (or trying to chase intruders away from the nest). The alarm calls include a sharp 'siflitt' for predators like cats and a 'flitt-flitt' for birds of prey like the hobby.

Barn swallows are monogamous and pairs stay together to breed for life; however, extra-pair copulation is also common (polygynous behavior). The males return to the breeding grounds before the females and select a nest site, which is then advertised to females with a circling flight and song. The breeding season of these birds varies with location. Both sexes defend the nest, but the male is particularly aggressive and territorial. Males guard females actively to avoid being cuckolded and may use deceptive alarm calls to prevent any attempts toward their mates. Barn swallows typically nest inside accessible buildings such as barns and stables, or under bridges and wharves. The neat cup-shaped nest is placed on a beam or against a suitable vertical projection. It is constructed by both sexes, with mud pellets collected in their beaks and lined with grasses, feathers, algae, or other soft materials. The female lays 2 to 7 reddish-spotted white eggs and incubates them for 14-19 days. Altricial (helpless) chicks fledge 18-23 days after hatching but stay with, and are fed by, the parents for about a week after leaving the nest. Young swallows usually start to breed in the first breeding season after they have born.

15-6-2017 VILLALONGA RESERVOIR, VALENCIA - BARN SWALLOW (Hirundo rustica)

15-6-2017 VILLALONGA RESERVOIR, VALENCIA - SCARCE SWALLOWTAIL BUTTERFLY (Iphiclides podalirius)

14-6-2017 MONTE CORONA, VALENCIA - WALL BROWN BUTTERFLY (Lasiommata megera)

Lasiommata megera, the wall or wall brown, is a butterfly in the family Nymphalidae (subfamily Satyrinae). It is widespread in the Palearctic realm with a large variety of habitats and number of generations a year.

The species lives in North Africa, Europe, the Caucasus, Asia Minor, the Middle East, western Siberia, northern Tian Shan, Dzungarian Alatau, Kazakhstan and Dzungaria.

Habitats include forest edges and clearings, shrubby areas in ravines and river valleys and sparse woodlands. It is also found in mountain habitats up to 0–3,000 metres (0–9,843 ft) above sea level.

The imago flies from April to October in two or three generations depending on locality and altitude. The larva feeds on grasses in the genera Festuca, Bromus, Deschampsia, Poa, Dactylis and Brachypodium.

"The egg is pale green when first laid, and in shape it is almost spherical, but rather higher than broad; it is finely ribbed and reticulated, but unless examined through a lens it appears to be quite smooth. The caterpillar when full grown is whitish-green, dotted with white. From the larger of these dots on the back arise greyish bristles; the three lines on the back (dorsal and sub-dorsal) are whitish, edged with dark green; the line on the sides (spiracular) is white, fringed with greyish hairs; anal points green, hairy, extreme tips white. Head larger than the first ring (first thoracic segment), green dotted with white and hairy, jaws marked with brownish. The chrysalis is green, with yellow-tinted white markings on the edge of the wing covers and ridges; the spots on the body are yellowish, or sometimes white. Occasionally the chrysalids are blackish, with white or yellow points on the body". (South 1906)