Black-necked grebe or eared grebe (Le cổ đen, Podiceps nigricollis)

The black-necked grebe or eared grebe (Podiceps nigricollis) is a member of the grebe family of water birds.
The bird is found Europe, Asia, eastern and southern Africa, interior southwestern Canada, and the southwest and western United States.
This species is migratory.

Podicipediformes, Podicipedidae: Latin podex, podicis vent, rear-end; pes foot; podicus of the foot (pes, pedis foot). The name means foot at the rear-end, describing position of the legs.

The genus name Podiceps comes from Latin podicis, "rear-end" and ped, "foot", and is a reference to the placement of a grebe's legs towards the rear of its body.

Nigricollis is a New Latin scientific term derived from Latin, meaning "black-necked". It is formed from niger ("black") and collis ("neck").