Cavaliere d'Italia

Identificazione

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.<p>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.

Tassonomia

The black-winged stilt was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. He placed it with the plovers in the genus Charadrius and coined the binomial name Charadrius himantopus. He specified the type locality as southern Europe. The taxonomic name Himantopus comes from Greek, meaning "strap-foot" or "thong-foot". The black-winged stilt is now one of five species placed in the genus Himantopus that was introduced by the French naturalist Mathurin Jacques Brisson in 1760. The species is monotypic: no subspecies are recognised.<p>The taxonomy of this bird is still somewhat contentious; it is one of four distinct species, which sometimes are considered subspecies of H. himantopus. H. himantopus sensu lato is made up of a single species, with 5–7 subspecies, and is sometimes referred to as the common stilt. The name "black-winged stilt" refers to H. himantopus sensu stricto, with two subspecies (H.h. himantopus from the Palearctic to South Asia, and H.h. meridionalis from the Afrotropical region).

Nome scientifico

Himantopus himantopus

Autorità

(Linnaeus, 1758)

Ordine

Caradriformi

Famiglia

Recurvirostridae

Genere

Himantopus

Areale e habitat

Breeding range: PAL, AF, OR : coastal and inland s to ec Europe, Sal (ne Cape Verde Is., s Macaronesia, w of nw Africa); n and Sub-Saharan Africa, Socotra, and coastal Madagascar; through sw Russia, Kazakhstan and Mongolia to se Russia, ne, e China, locally Honshu and Shikoku (sc Japan), Taiwan, Semirara (ec Philippines), s to n Middle East, Indian subcontinent to Sri Lanka, Malay Pen., Vietnam, n Sumatra and w Java. Non-breeding range: to Greater Sundas and Philippines.

Areale riproduttivo

PAL, AF, OR : coastal and inland s to ec Europe, Sal (ne Cape Verde Is., s Macaronesia, w of nw Africa); n and Sub-Saharan Africa, Socotra, and coastal Madagascar; through sw Russia, Kazakhstan and Mongolia to se Russia, ne, e China, locally Honshu and Shikoku (sc Japan), Taiwan, Semirara (ec Philippines), s to n Middle East, Indian subcontinent to Sri Lanka, Malay Pen., Vietnam, n Sumatra and w Java

Areale non riproduttivo

to Greater Sundas and Philippines

Migrazione

Migratori completi

Comportamento

Comportamento migratorio: Migratori completi.

Conservazione

Tendenza della popolazione: in aumento.

Tendenza della popolazione

in aumento