Adult Description
Stocky, large-headed, dark seabird. Breeding adult all black except for white face and long golden plumes curling over back of head and neck. Bill large and red-orange, with a bright-orange yellow plate over the base. Nonbreeding adult has dark gray face with no head plumes or bill plate.Immature Description
Resembles nonbreeding adult, with dusky eyes instead of yellow.Relative Size

crow-sizedMeasurements
- Both Sexes
- Length: 14.2-15.8 in (36-40 cm)
- Weight: 18.3-35.3 oz (520-1000 g)