Western Grebes are large and slender with long necks and long, thin bills. Plumage is dark gray above and white below, with a clear color division. The top of the face is black, and the bottom white. The black extends below the eye in the Western Grebe. (In the closely related and similar-appearing Clark’s Grebe, the black ends above the eye.) The bill of the Western Grebe is yellowish to dull olive.