White-throated Daggerbill

Schistes albogularis

Fairly small hummingbird found on the west slope of the Andes from central Colombia to southwestern Ecuador. Both sexes mostly green with short, straight bill. Males have green throat and crown with purplish patches on neck sides and a bold broken white collar. Females have white throat. Inconspicuous; look for singles at flower patches in understory of foothill and subtropical forest and edge, from around 800-2,000 m.

识别特征

The white-throated daggerbill is 8.6 to 9.3 cm (3.4 to 3.7 in) long and weighs 3.5 to 4.1 g (0.12 to 0.14 oz). It gets its name from the tip of its bill, which is very narrow and sharply pointed. Both sexes are generally green overall. Males have a shiny green forehead, violet-blue patches on the sides of the throat that can extend well up into the face, a white band across the upper chest, and a small white patch behind the eye. Females' foreheads are not shiny, the throat patches are smaller and mostly blue, and they have an unmarked white throat.

分类信息

The white-throated daggerbill has often been considered conspecific with what is now the only other member of its genus, Geoffroy's daggerbill (S. geoffroyi) under the name "wedge-billed hummingbird". The South American Classification Committee (SACC) of the American Ornithological Society split them in June 2018 and the International Ornithological Committee (IOC), the Clements taxonomy, and BirdLife International's Handbook of the Birds of the World (HBW) followed suit. Later all of them except HBW adopted the "daggerbill" English name; HBW uses the name "western wedge-billed hummingbird". Some authors have suggested that the genus be merged into that of the visorbearers, Augastes. The white-throated daggerbill is monotypic.

学名
Schistes albogularis
命名信息
Gould, 1852
Apodiformes
Trochilidae
Schistes

分布与栖息地

The white-throated daggerbill is found from the western Andes and the west slope of the Central Andes of Colombia south into western Ecuador. It inhabits the interior and edges of dense cloudforest, often near streams. In elevation it ranges between 800 and 2,000 m (2,600 and 6,600 ft).

迁徙
Resident species

行为

Migration pattern: Resident species.

保护状况

Population trend: stable.

种群趋势
stable

照片

分布

鸟叫声

其他鸟类

Verreaux's Eagle

Verreaux's Eagle

Aquila verreauxii

Spectacular large black eagle. Distinctive in flight, when it shows a long tail and long wings that pinch in at the base. There are white patches toward the ends of the wings and on the back. Immature is brownish on the back and streaked below but still shows white panels in the wings and the characteristic shape. Found around cliffs and other rocky terrain in mountainous areas. Call is an upslurred scream. Separated from Long-crested Eagle by different shape: lankier, with a longer tail and narrower, more pointed wings.

Northern Brown-throated Weaver

Northern Brown-throated Weaver

Ploceus castanops

Fairly small and slim weaver with a slender bill and a pale eye. Breeding male is distinctive, with bright yellow overall plumage and a chestnut face. Females, non-breeding males, and juveniles are much duller, but show streaking on the back and are pale overall. Found mainly in wetlands, though they will range into drier surrounding country. Almost always in flocks. Vocalizations are typical of weavers: “chek” notes and a sizzling, “radio static” song. Plumages other than breeding male can be easily confused with other weavers, but can be identified by the pale eye, wetland habitat, and overall size and shape.

Dambo Cisticola

Dambo Cisticola

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Small cisticola that is pale and buffy below, and dark on the back. The crown, back of the neck, and back are heavily streaked. Note specific habitat preferences, which can help with identification: found in seepage zones of seasonally wet grasslands, alongside but in wetter situations than Wing-snapping Cisticolas, but avoiding the seasonally flooded habitat of Pale-crowned Cisticola. Very similar to Wing-snapping and Pale-crowned Cisticolas, but longer-tailed than both, and further distinguished from Pale-crowned in breeding plumage by the streaked crown. Also similar to Zitting and Desert Cisticolas, but has a different voice, and is darker on the back. Song consists of nasal notes, given from a low perch (termite mound or grass stem) or occasional brief display flight at grass top height. In contrast to other small cisticolas, it does not have a true aerial display flight.

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