Least Sandpiper
Calidris minutilla
Tiny brownish sandpiper. At all ages, most easily distinguished from other small sandpipers by darker, more brownish coloration. Juveniles are particularly bright with rusty tones on the upperparts. Also note fine-tipped bill and yellowish legs, but beware legs can be covered with dark mud and other peeps (like Semipalmated Sandpiper) can rarely show slightly greenish legs. Habitat and behavior are helpful supporting clues, too. Typically forages in a crouched posture with bent legs, picking for invertebrates in the mud. Often in small loose groups, but not in large, tight flocks like Semipalmated or Western Sandpipers. Prefers drier mud, often on the higher edges of mudflats or small patches of water in marshes. Widespread and common, especially inland. Breeds in various wetland habitats throughout Alaska and Canada. Winters from the southern U.S. to South America. Listen for high-pitched, rolling “greeep!” calls.
Identification
This species has greenish legs and a short, thin, dark bill. Breeding adults are brown with dark brown streaks on top and white underneath. They have a light line above the eye and a dark crown. In winter, Least sandpipers are grey above. The juveniles are brightly patterned above with rufous coloration and white mantle stripes.<p>This bird can be difficult to distinguish from other similar tiny shorebirds; these are known collectively as "peeps" or "stints". In particular, least sandpiper is very similar to its Asian counterpart, long-toed stint. It differs from that species in its more compact, shorter-necked appearance, shorter toes, somewhat duller colors, and stronger wingbar.<p>Measurements:
Taxonomy
- Scientific name
- Calidris minutilla
- Authority
- (Vieillot, 1819)
- Order
- Charadriiformes
- Family
- Scolopacidae
- Genus
- Calidris
Range and habitat
- Breeding range
- NA : low Arctic and subarctic n Nearctic tundra and taiga wetlands: e Aleutian Is., all Alaskan mainland, n Canada from n Yukon to n British Columbia, e to s James Bay, Ungava Pen., Labrador and Nova Scotia
- Non-breeding range
- subtropical to tropical coastal mudflats and inland wetlands from s USA, Caribbean, and Mexico to n South America
- Migration
- Complete migrants
Conservation
- Population trend
- declining
Photos
Distribution
Bird Calls
Other Birds
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Small cuckooshrike with a restricted range, found only on Yap, which is part of the larger Caroline Islands group in the Federated States of Micronesia. Males are mainly gray with black on the face, wing, and tail. Females brown on the back and rich buff below, with fine scaling. Seemingly only found in good forest. One frequent vocalization is an upslurred whistle. Distinctive within its small range.
Streak-throated Swallow
Petrochelidon fluvicola
A small brown-black swallow with a short tail and comparatively weak flight. The forehead, crown, and back of the neck are dull chestnut with faint dark streaks. The back is glossy deep blue with a few narrow whitish streaks; the rump is pale brown and is more prominent in flight. The wings and tail are blackish-brown, and the tail almost square-ended. Underparts are buffy white with blackish-brown streaks, especially the chin, throat, and upper breast. Juvenile is duller and browner than adult, with buff feather edges and faint streaks on underparts. Found mostly as individuals in mixed swallow flocks; different, weaker flight action is characteristic.
McConnell's Spinetail
Synallaxis macconnelli
Dark, long-tailed, sparrow-sized bird of dense thickets. Body plumage is mostly dark gray with a bright rufous cap and wings. An uncommon and patchily distributed resident of tepui slopes and lowland forest; often found near large rock formations and in old disturbed areas in rainforest. Stays close to the ground, rarely emerging from dense cover. Occurs in pairs or small family groups that forage unobtrusively for insects and do not follow mixed-species flocks. Voice is only audible at close range but is usually the first indication of this bird’s presence: it is a low, gravelly note, given repeatedly and irregularly, often sped into a rolling churr. Pale-breasted Spinetail has a similar plumage pattern, but McConnell’s is much darker and occupies forested habitats that Pale-breasted avoids.
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