Red-necked Stint
Calidris ruficollis
These birds are among the smallest of waders, very similar to the little stint, Calidris minuta, with which they were once considered conspecific. The red-necked stint's small size, fine dark bill, dark legs and quicker movements distinguish this species from all waders except the other dark-legged stints. It measures 13–17 cm (5.1–6.7 in) in length, 28–37 cm (11–15 in) in wingspan, and 21–51 g (0.74–1.80 oz) in weight.
ID text from Wikipedia, CC BY-SA 4.0
Sharp-tailed Sandpiper
Calidris acuminata
A small-medium wader, the portly sandpiper has a pot belly, flat back and somewhat drawn-out rear end. It has a mottled chestnut-brown upper body with sharp-looking feathers with a dark centre, a chestnut cap on its head and a brown stripe through each eye. Its bill is dark grey to black and straight, and its legs are olive- to yellow-coloured. The underparts are white or paler in colour, with the mottling similar to that on the breast and sides of the belly. The plumage is more vivid during the breeding season and duller in its winter plumage.
ID text from Wikipedia, CC BY-SA 4.0
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