The horned grebe or Slavonian grebe (Podiceps auritus) is a relatively small waterbird in the family Podicipedidae. There are two known subspecies; (P. a. auritus), which breeds in Eurasia, and (P. a. cornutus), which breeds in North America. In Eurasia, the subspecies is distributed over most of northern Europe and Asia, breeding from Greenland to western China. The North American subspecies spans most of Canada and some of the United States. Both subspecies appear physically similar and get their name from large patches of yellowish feathers, called “horns”, located behind the eyes that can raise and lower at will.