Ruff (Calidris pugnax, Rẽ lớn ngực đốm) is a medium-sized wader, Scolopacidae family, Calidris genus.
The bird is a visiting winter bird, uncommonly sighted at the Xuan Thuy National Park.
Ruff (Calidris pugnax, Rẽ lớn ngực đốm) is a medium-sized wader, Scolopacidae family, Calidris genus.
The bird is a visiting winter bird, uncommonly sighted at the Xuan Thuy National Park.