Nonbreeding

Small and slightly more slender than similar species with a pale bill. Nonbreeding birds have a grayish throat, white breast, and a bit of white on the side of the neck.

Breeding adult

Small and slightly more slender seabird. Breeding birds have white, fluffy-looking eyebrows.

Breeding adults

Breeding adult

Slender seabird that flies on stiff, narrow wings. Underwings are bright white.

Nonbreeding

Nonbreeding birds have a grayish throat, white breast, and a bit of white on the side of the neck.

Juvenile

Juveniles have a gray back with gray-and-white scalloping on its sides. Note pale bill.

Breeding adult

Flies with stiff wingbeats, banking side to side. Note white underwings.

Breeding adult

Small seabird. Pale bill and white sides of neck help separate it from similar species.