Baird's Sandpiper
Calidris bairdii
Adults have black legs and a short, straight, thin dark bill. They are dark brown on top and mainly white underneath with a black patch on the rump. The head and breast are light brown with dark streaks. In winter plumage, this species is paler brownish grey above. This bird can be difficult to distinguish from other similar tiny shorebirds; these are known collectively as "peeps" or "stints". One of the best identification features is the long wings, which extend beyond the tail when the bird is on the ground.
ID text from Wikipedia, CC BY-SA 4.0
Temminck's Stint
Calidris temminckii
These birds are very small waders, at 13.5–15 cm (5.3–5.9 in) length. They are similar in size to the little stint (Calidris minuta) but shorter legged and longer winged. The legs are dull yellowish or brown, and the outer tail feathers white, in contrast to little stint's black legs and grey outer tail feathers. This is a rather drab wader, with mainly plain brown upperparts and head, and underparts white apart from a darker breast. The breeding adult has some brighter rufous and/or blackish mantle feathers to relieve the generally undistinguished appearance.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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