The black-necked grebe (Podiceps nigricollis), known in North America as the eared grebe, is a member of the grebe family of water birds. It occurs on every continent except Australia and Antarctica.
The Horned Grebe (Podiceps auritus) is a member of the grebe family of water birds. It is also known as the Slavonian Grebe. It is an excellent swimmer and diver, and pursues its fish prey underwater. P. auritus is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.