Green Pygmy-Goose

Nettapus pulchellus

Tiny duck. Male has dark green head and neck with a white cheek-flash. Female lacks the dark head and neck, but has a strong dark eye-line continuing back to nape. Usually found in tropical freshwater wetlands across northern Australia.

识别特征

Ranging from 30 to 36 cm (12 to 14 in) in length, the green pygmy goose is one of the smallest species of duck. It has a 48 to 60 cm (19 to 23.5 in) wingspan. It has a small bill and a compact form. The breeding male has a predominantly dark green back and neck, and a dark gray crown. The cheeks are white, and the underparts are pale grey and white scalloped. The tail, primary flight feathers and primary coverts are black, while the secondary flight feathers are white. The secondary coverts are a dark iridescent green. This iridescence is lost outside of the breeding season and the plumage becomes duller. The species exhibits a degree of sexual dimorphism — the female has a barred rather than green neck but otherwise resembles the non-breeding male. Immature birds are less brightly coloured, and have mottled dark brown heads.<p>The male has a high-pitched whistle and the female a lower-pitched call.

分类信息

First described in 1842 by the ornithologist John Gould, its specific name is derived from diminutive of the Latin adjective pulcher "pretty". It is one of three species in the Afro-Asian genus Nettapus, an ancient and unusual group of ducks. No subspecies are recognised.

学名
Nettapus pulchellus
命名信息
Gould, 1842
Anseriformes
Anatidae
Nettapus

分布与栖息地

The green pygmy goose is found in southern New Guinea and across northern Australia (from Western Australia, through Northern Territory and into Queensland). To the west, it commonly reaches Timor-Leste, where it possibly breeds at Lake Iralalara. It is largely resident, apart from dispersion in the wet season. The habitat is well-vegetated lowland lagoons and other permanent fresh waters.

迁徙
Resident species

保护状况

种群趋势
declining

照片

分布

鸟叫声

其他鸟类

Humaita Antbird

Humaita Antbird

Myrmelastes humaythae

Understory antbird of wet, forested habitats. Males are evenly gray; females are warm brown. Both sexes have tiny white wing spots and light gray eyes. Part of the species complex previously known as “Spot-winged Antbird;” it is similar to the previously conspecific Brownish-headed Antbird, which is separated by range and habitat. Humaita Antbird is found away from the foothills, in the Amazonian lowlands, while Brownish-headed is found in the understory of mature rainforest along the base of the Andes. In parts of its range, it is found nearly exclusively in palm swamps. Its song is a slowly-rising series of rapid high notes.

Little Green-Pigeon

Little Green-Pigeon

Treron olax

This aptly-named forest species is the smallest of the green-pigeons. Males are highly distinctive, with a blue-gray head and neck, orange chest, pinkish-maroon back, and green belly. Females are duller, but their combination of size, gray crown, and contrasting yellow-green chest serves to tell them apart from other green-pigeons. Pairs often forage and perch together, often on exposed bare branches. Like other pigeons, frequently gathers at fruiting trees. Song is a series of strangely buzzy rising whistles.

Hawfinch

Hawfinch

Coccothraustes coccothraustes

Unique, chunky finch. Note the massive bill (steely gray in summer, pinkish in winter) and blue-gray hindneck, like a shawl on an orangey head. Broad white tail tip and white wing band show mainly in flight. Despite distinctive appearance, shy and easily overlooked. Favors mixed and deciduous mature woodland, especially with beech, oak, and hornbeam, where tends to feed and perch quietly, high in the canopy. Also feeds on the ground in autumn and winter, sometimes forming single-species flocks. Gives high-pitched “tsik!” and lower ticking calls.

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