Western Sandpiper
Calidris mauri
Small sandpiper with relatively long, droopy bill (longer on females). In breeding plumage, shows rich rufous tones on shoulders, cheeks, and crown. Nonbreeding is plain pale gray above and white below. Juveniles look pale-faced and have a bright strip of rufous feathers on the upper edge of the wings. Most similar to Semipalmated Sandpiper, which averages shorter-billed and duller grayish-brown overall. Extremely difficult to distinguish in winter; note Western is somewhat larger-headed and more front-heavy. Droopy bill might recall Dunlin, but Western is smaller and paler. Breeds on high Arctic tundra in Alaska. In migration and winter, occurs in large flocks on mudflats and beaches. Much more common in western North America; uncommon to rare on the east coast. Occurs in the winter in the U.S., unlike Semipalmated Sandpiper; regularly winters as far south as Peru, rare to Chile.
识别特征
Adults have dark legs and a short, thin, dark bill, thinner at the tip. The body is brown on top and white underneath. They are reddish-brown on the crown. This bird can be difficult to distinguish from other similar tiny shorebirds, especially the semipalmated sandpiper. This is particularly the case in winter plumage, when both species are plain gray. The western sandpiper acquires winter plumage much earlier in the autumn than the semipalmated sandpiper.<p>Measurements:
分类信息
- 学名
- Calidris mauri
- 命名信息
- (Cabanis, 1857)
- 目
- Charadriiformes
- 科
- Scolopacidae
- 属
- Calidris
分布与栖息地
- 繁殖区
- NA, PAL : Chukotskiy Pen. s to Anadyr (ne Siberia; few), St. Lawrence I. (Bering Sea) and w, n Alaska mainland
- 非繁殖区
- NA, MA, n SA : temperate to n tropical (mainly) coastal Western Hemisphere: Washington to Peru and Galapagos (e Pacific), se Canada to Florida, Gulf of Mexico, Caribbean islands and coasts to Guianas; inland c Mexico to n Costa Rica
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Cinereous Conebill
Conirostrum cinereum
Active little bird of shrubbery, hedges, and gardens, mainly in the Andes, but down to coast in northern Chile and Peru. Usually in pairs or family groups and not with mixed-species flocks. Feeds low to high at fruit and flowers, rarely staying still long and often hidden in foliage. Grayish overall with variable buffy wash to underparts. Best identified by white eyebrow, sharply pointed bill, and small white wing flash; no other species in range looks very similar.
Sentinel Lark
Corypha athi
A large, robust rusty lark with a short crest, hefty bill, and prominent rufous wing panel that is obvious in flight. Pairs are resident in open grassland and grassy savanna. It is most conspicuous when it perches up singing a sweet, simple song of 2-3 whistled notes such as “treee-treeloo”. The similar Red-winged Lark is larger than Sentinel Lark and less compact, with a longer tail and blackish patches on the sides of the neck.
Gray Currawong
Strepera versicolor
Large, crow-sized bird, gray or black, with large black bill and yellow eye. In flight, white undertail, tail tip, and primary bases distinctive; some subspecies of Pied Currawong very similar, but Gray has narrow pale trailing edge to wing in all plumages. Black Currawong has thicker bill and dark undertail. Loud ringing, clinking song, reminiscent of some lyrebird sounds.
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