General Description: Ring-necked Duck (Aythya collaris) are sexually dimorphic pond ducks. Both genders have a broad white band around the bill that separates the black tip from the gray base. Males are black with gray sides and a white crescent that separates the black breast and the gray sides. Females are mottled brown overall, although they are darker on the back, and they have a narrow white line behind the eye.

Favored Habitat: Ponds and marshes.

Comments: Alas, the ring on a "ring-necked" duck is on the bill, not the neck.