Tuesday, 3 November 2020
Monday, 2 November 2020
2-11-2020 DEVESA PLAYA, VALENCIA - LITTLE EGRET (Egretta garzetta)
The Little Egret, Egretta garzetta, is a dainty heron adorned in pure white plumage. It is characterized by a slender black beak, long black legs, and, notably in the western race, yellow feet. This elegant bird is a sight to behold with its graceful neck and poised stance.
Adult Little Egrets measure between 55–65 cm in length with a wingspan of 88–106 cm, and weigh 350–550 g. Their plumage is predominantly white, though some may exhibit bluish-grey coloration. Breeding adults boast ornate nape plumes reaching about 150 mm, along with distinctive feathers on the breast and elongated scapulars. The bill and lores are black, with greenish-grey skin at the base of the lower mandible and around the eye, which houses a yellow iris. Legs are black with contrasting yellow feet, though juveniles may have greenish-black legs and duller feet. The subspecies E. g. nigripes is distinguished by yellow skin between the bill and eye, and blackish feet.
The Little Egret frequents a variety of wetland habitats, from the shores of lakes and rivers to marshes and coastal regions. It is often found in open environments, such as mangroves, swamps, mudflats, and sandy beaches, as well as human-altered landscapes like rice fields.
The species has a broad breeding distribution across warm temperate to tropical regions of Asia, Africa, Australia, and Europe. Northern populations are migratory, wintering in Africa and southern Asia, while others remain as permanent residents in warmer areas.
Little Egrets are social yet territorial when feeding. They exhibit a range of foraging behaviors, from active chasing to patient ambush. Their movements are often in response to the presence of other animals, which may stir up prey.
The Little Egret's vocalizations include croaking and bubbling sounds at breeding colonies and a harsh alarm call when disturbed. These calls are similar to those of the Black-crowned Night Heron and the Cattle Egret.
Breeding colonies are often mixed with other water birds. Nests are platforms of sticks located in trees, shrubs, or reed beds. Clutches typically consist of three to five bluish-green eggs, incubated by both parents for about three weeks. The young fledge at approximately six weeks old.
The Little Egret can be confused with other white egrets, particularly the Snowy Egret, which shares some of its New World range. However, the Little Egret is larger and has more varied foraging strategies.
The diet is diverse, including fish, amphibians, small reptiles, mammals, birds, crustaceans, molluscs, insects, spiders, and worms. The Little Egret employs various hunting techniques, both in water and on land, to capture its prey.
The Little Egret is classified as "Least Concern" by the IUCN. Conservation measures in the 20th century have allowed populations to recover in Europe, and the species has been expanding its range. It is now successfully colonizing new areas, including the New World.
Its breeding distribution is in wetlands in warm temperate to tropical parts of Asia, Africa, Australia, and Europe. A successful colonist, its range has gradually expanded north, with stable and self-sustaining populations now present in the United Kingdom.
In warmer locations, most birds are permanent residents; northern populations, including many European birds, migrate to Africa and southern Asia to over-winter there. The birds may also wander north in late summer after the breeding season, and their tendency to disperse may have assisted in the recent expansion of the bird's range. At one time common in Western Europe, it 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. By the beginning of the 21st century the bird was breeding again in France, the Netherlands, Ireland and Britain. Its range is continuing to expand westward, and the species has begun to colonise the New World; it was first seen in Barbados in 1954 and first bred there in 1994.
Sunday, 1 November 2020
Saturday, 31 October 2020
31-10-2020 PARCO NATURALE DELLA LESSINIA, ITALY - EURASIAN NUTCRACKER (Nucifraga caryocatactes)
The spotted nutcracker, Eurasian nutcracker, or simply nutcracker (Nucifraga caryocatactes) is a passerine bird slightly larger than the Eurasian jay. It has a much larger bill and a slimmer looking head without any crest. The feathering over its body is predominantly chocolate brown with distinct white spots and streaks (absent from most of the body in southern Asian populations, which are sometimes treated as a separate species, southern nutcracker N. hemispila). The wings and upper tail are virtually black with a greenish-blue gloss.
The spotted nutcracker is one of three currently-recognized species of nutcracker. The Kashmir nutcracker (Nucifraga multipunctata) was formerly considered a subspecies of the spotted. The other member of the genus, Clark's nutcracker (N. columbiana), occurs in western North America.
Friday, 30 October 2020
Wednesday, 28 October 2020
28-10-2020 MONTE CORONA, VALENCIA - DESERT DARTER DRAGONFLY (FEMALE) (Sympetrum sinaiticum )
34-37 mm. Medium-sized dragonfly of the Libellulidiae family; it is distributed throughout the Middle East, North Africa and the Mediterranean coast of the Iberian Peninsula, with a tendency to expand its peninsular distribution.
Sexual dimorphism is present in mature males, which have brown upper eyelids and light gray lower eyelids. Their thorax is brown on top and lighter on the sides, with black-edged sutures. The abdomen is pale red on top with orange sides. The sides of segments S1 to S3 are pale and have a distinctive elongated black spot. The last segments are also spotted with black on the sides. The wings are hyaline with a bright red leading edge and a reddish (sometimes pale yellow) pterostigma. The leading edge of the wing is somewhat colored.
The legs are edged in black, and the rest of the plumage is straw-colored to brownish with a light blue interior. The female is straw-yellow, lacking any orange coloration. She has the same black markings on the sides of her abdomen as the male, which helps in identification. The only other feature she shares with the male is the eye color, although it is somewhat duller.
It inhabits open spaces in warm areas, in all types of stagnant or slow-moving water.
Tuesday, 27 October 2020
Monday, 26 October 2020
26-10-2020 XERACO, VALENCIA - SPECKLED WOOD BUTTERFLY (Pararge aegeria)
The speckled wood (Pararge aegeria) is a butterfly found in and on the borders of woodland areas throughout much of the Palearctic realm. The species is subdivided into multiple subspecies, including Pararge aegeria aegeria, Pararge aegeria tircis, Pararge aegeria oblita, and Pararge aegeria insula. The color of this butterfly varies between subspecies. The existence of these subspecies is due to variation in morphology down a gradient corresponding to a geographic cline.
The background of the wings ranges from brown to orange, and the spots are either pale yellow, white, cream, or a tawny orange. The speckled wood feeds on a variety of grass species. The males of this species exhibit two types of mate locating behaviors: territorial defense and patrolling. The proportion of males exhibiting these two strategies changes based on ecological conditions. The monandrous female must choose which type of male can help her reproduce successfully. Her decision is heavily influenced by environmental conditions.
Sunday, 25 October 2020
19-10-2020 SIERRA DE ESPUNA, MURCIA - AOUDAD (Ammotragus lervia)
The Barbary sheep (Ammotragus lervia), also known as aoudad (pronounced [ˈɑʊdæd]) is a species of caprine native to rocky mountains in North Africa. While this is the only species in genus Ammotragus, six subspecies have been described. Although it is rare in its native North Africa, it has been introduced to North America, southern Europe, and elsewhere. It is also known in the Berber language as waddan or arwi, and in former French territories as the moufflon.The Barbary sheep (Ammotragus lervia), also known as aoudad (pronounced [ˈɑʊdæd]) is a species of caprine native to rocky mountains in North Africa. While this is the only species in genus Ammotragus, six subspecies have been described. Although it is rare in its native North Africa, it has been introduced to North America, southern Europe, and elsewhere. It is also known in the Berber language as waddan or arwi, and in former French territories as the moufflon.
Barbary sheep stand 75 to 110 cm (2 ft 6 in to 3 ft 7 in) tall at the shoulder, with a length around 1.5 m (5 ft), and weigh 30 to 145 kg (66 to 320 lb).[5] They are sandy-brown, darkening with age, with a slightly lighter underbelly and a darker line along the back. Upper parts and the outer parts of the legs are a uniform reddish- or grayish-brown. Some shaggy hair is on the throat (extending down to the chest in males) with a sparse mane. Their horns have a triangular cross-section. The horns curve outward, backward, then inward, and can exceed 76 cm (30 in) in length. The horns are fairly smooth, with slight wrinkles evident at the base as the animal matures.
Subscribe to:
Comments (Atom)