The Ring-necked Duck (Aythya collaris) breeds from east Alaska and central Canada to north and central USA, and winters from south USA to Panama. It prefers deep open water of freshwater marshes, ponds, and lakes. Its size is of 41 cm (16 inches) in height and 700 g in weight.
Its head, neck, back and breast are glossy black. Sides and flanks are gray. Belly white and iris dark. This bird feed on aquatic plants, insects and mollusks.