Clark’s Grebes are large and slender with long necks and long, thin bills. Their plumage is dark gray above and white below, with a clear color division. The top of the face is black and the bottom white. In Clark’s Grebe, the black does not extend below the eye. In the closely related and similar-appearing Western Grebe, the black ends below the eye. The bill of Clark’s Grebe is bright yellow to orange-yellow.