Aechmophorus

Aechmophorus is a genus of grebes, which are diving birds belonging to the order Podicipediformes. The genus currently contains two recognized species, the Western Grebe (Aechmophorus occidentalis) and the Clark's Grebe (Aechmophorus clarkii). These two species are very similar in appearance and were historically considered conspecific, meaning they were classified as a single species. Distinguishing between them can be challenging, especially in non-breeding plumage, but key differences exist in bill color, the extent of white on the face, and breeding plumage characteristics.

Both Aechmophorus grebes are large, elegant waterbirds found in North America. They inhabit freshwater lakes, ponds, and slow-moving rivers, particularly during the breeding season. Their diet primarily consists of fish, which they catch by diving. They are known for their elaborate courtship displays, which include synchronized dives, rushes across the water, and the ritualistic presentation of weeds. Nests are typically built on the water, floating among vegetation. Chicks are born precocial, able to swim and dive shortly after hatching, and are often carried on their parents' backs. Conservation status varies between the two species and is influenced by factors such as habitat availability and water quality.