Golden-collared Woodpecker
Dryobates cassini
Small woodpecker of lowland rainforest; heard more often than seen. Note prominent yellow patch on nape in both sexes. Smaller and less colorful than other woodpeckers that occur with it. Often with mixed-species flocks; occurs from mid-level into canopy, infrequently in the understory. Climbs tree trunks and bores into dead wood and arboreal termite nests. Call is a drawn-out, ringing trill on one pitch.
识别特征
The golden-collared woodpecker is about 16 cm (6.3 in) long and weighs about 24 to 38 g (0.85 to 1.3 oz). Males and females have the same plumage except on their heads. Males have a red crown with grayish black feather bases that show through. The female has a brown crown with a green tinge and whitish yellow spots on the rear. Adults of both sexes have a mostly buffish white face with fine darker streaks and a golden-yellow nape and hindneck. Their upperparts are mostly yellowish green with a bronzy tinge and sometimes yellowish barring on the rump. Their flight feathers are dark brown with greenish edges and white bars on the secondaries and tertials. Their tail is dark brown with paler bars on most feathers and some white on the outer two pairs. Their underparts are white to pale buffish white barred with black to brownish black. The iris is dark brown to red-brown, the longish beak dark gray with a paler tip, and the legs are olive to dark gray or blackish. Juveniles resemble adults but have a darker face and greener upperparts; both sexes have some red on the crown.
分类信息
The International Ornithological Committee and BirdLife International's Handbook of the Birds of the World place the golden-collared woodpecker in genus Veniliornis. However, starting in 2018, the American Ornithological Society and the Clements taxonomy moved all species of genus Veniliornis into genus Dryobates.<p>The golden-collared woodpecker is monotypic. However, what is now the Choco woodpecker (V. (or D.) chocoensis) was at one time considered a subspecies of it.
- 学名
- Dryobates cassini
- 命名信息
- (Malherbe, 1862)
- 目
- Piciformes
- 科
- Picidae
- 属
- Dryobates
分布与栖息地
The golden-collared woodpecker is found from Amazonas and Bolívar states in Venezuela east and south through the Guianas and Brazil north of the Amazon between the Rio Negro and Amapá. It inhabits the interior and clearings in rainforest and also more open landscapes with trees and shrubs. In elevation it ranges from sea level to 1,500 m (4,900 ft).
- 迁徙
- Resident species
行为
The golden-collared woodpecker is believed to be a year-round resident throughout its range. <p>The golden-collared woodpecker usually forages alone but does join mixed species feeding flocks. It often hunts in the canopy. Its diet has not been detailed but is known to include Cerambycidae beetles.<p>Nothing is known about the golden-collared woodpecker's breeding biology. <p>The golden-collared woodpecker is usually rather silent. It does make "a series of 33–35 nasal 'khir' notes, rising in frequency" that is also described as a "loud, upslurred, rattling trill".
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Blue Nuthatch
Sitta azurea
Not the only blue nuthatch, but the bluest nuthatch. Unmistakable, with a dark head, pale eyering, white throat and breast, and dark-lined pale blue feathers on the wings. Gives quick, sharp, nasal “tzwp” or “tzwit” notes. Clambers up and down tree trunks, often in small parties; frequent member of mixed-species foraging flocks. Favors montane and hilly forests.
Straight-billed Hermit
Phaethornis bourcieri
Large, drab grayish hermit with a long straight bill. Lacks a strong face pattern. Also note elongated white central tail feathers. Occurs in lowlands across much of northern South America, typically below 700 m. Found within terra firme forest, staying low and quickly zipping around flower patches in the understory.
Berthelot's Pipit
Anthus berthelotii
Restricted to the Canary Islands and Madeira. An oddly-proportioned pipit with a short tail making it look front heavy. Pale overall with a streaky breast, white belly, and a conspicuous white eyebrow. The wings coverts have prominent dark centers. Generally found foraging on the ground, in open dry areas with low vegetation. The call is a short series of “tchri” notes.
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