Calidris

trivial name latin name
Sanderling Calidris alba
Dunlin Calidris alpina
Red Knot Calidris canutus
Curlew Sandpiper Calidris ferruginea
Purple Sandpiper Calidris maritima
Pectoral sandpiper Calidris melanotos
Little Stint Calidris minuta
Ruff Calidris pugnax
Temminck's Stint Calidris temminckii

comparison of wing and tail configuration