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Genus Arenaria
Ruddy Turnstone - It is a fairly small and stocky bird, 22–24 centimetres long with a wingspan of 50–57 centimetres and a weight of 85-150 grams. The dark, wedge-shaped bill is 2–2.5 centimetres long and slightly upturned. The legs are fairly short at 3.5 centimetres and are bright orange.
Black turnstone - It is 22-25 centimeters long and weighs 100-170 grams. The black bill is 20-27 millimeters long and slightly upturned. The legs and feet are blackish-brown with a reddish tinge. The bird is largely black and white in appearance. Breeding-plumaged adults have a black head and breast apart from a white spot between the eye and bill, a white stripe over the eye and white flecks on the sides of the breast. The upperparts are blackish-brown with pale fringes to the wing-coverts and scapular feathers. The belly and vent are white. In flight it shows a white wingbar, white shoulder patch and white tail with a broad black band across it. There is white from the lower back to the uppertail-coverts apart from a dark bar across the rump.