Great Cormorant

Phalacrocorax carbo

Order

PELECANIFORMES

Family

Cormorants (Phalacrocoracidae)

Code 4

GRCO

Code 6

PHACAR

ITIS

Breeding Location:

Seashore, rocky or sandy, Rocky cliffs

Breeding Type:

Monogamous, Colonial

Breeding Population:

Egg Color:

Pale blue or green, often nest stained

Number of Eggs:

Incubation Days:

Egg Incubator:

Both sexes

Nest Material:

Twigs, seaweed, grasses, moss and bits of refuse

Migration:

Migratory

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General

Great Cormorant: Largest North American comorant is black with bright yellow throat pouch bordered with white feathers. Females are similar, juveniles have brown upperparts and white belly.

Range and Habitat

Great Cormorant: Native of the Americas and Greenland. Prefers rocky coasts with sheltered inshore waters.

Breeding and Nesting

Great Cormorant: Three to five pale blue or green eggs incubated by both sexes 28 to 31 days in a nest of twigs, seaweed, and refuse, lined with grasses and moss on high ground.

Foraging and Feeding

Great Cormorant: Dives for fish and crustaceans.

Vocalization

Great Cormorant: Usually silent. Low groan during breeding.

Similar Species

Great Cormorant: Double-crested Cormorant is smaller with orange throat patch.

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Bird Call Credits: The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology. Martyn Stewart, http://www.naturesound.org, Redmond, Washington USA. The reuse or copying of bird calls in this database is strictly forbidden2.

Field Guide to Birds of North America