Northern Gannet vs Great Cormorant
Morus bassanus versus Phalacrocorax carbo
Play a quiz with Northern Gannet and Great Cormorant
Northern Gannet
Great Cormorant
In short
The Northern Gannet and Great Cormorant are both large seabirds, but they differ in plumage and foraging behavior. The Northern Gannet is primarily white with black wingtips, while the Great Cormorant is mostly dark with a distinctive white patch on the throat during breeding season. Gannets are plunge-divers, whereas cormorants dive from the surface.
Identification tips
1. Plumage: Look for the predominantly white body with black wingtips of the Northern Gannet versus the dark body and white throat patch of the Great Cormorant. 2. Behavior: Note the plunge-diving of gannets compared to the surface-diving of cormorants. 3. Habitat: Consider the location; gannets are more oceanic, while cormorants are often seen in more varied aquatic environments.
Size
Both species are large, but the Northern Gannet is typically larger and more robust than the Great Cormorant.
Plumage
Northern Gannets are mostly white with black wingtips, while Great Cormorants are predominantly dark with a white throat patch during breeding. Juvenile gannets are darker and mottled, which can cause confusion.
Behaviour
Northern Gannets are known for their dramatic plunge-diving to catch fish, often from great heights. In contrast, Great Cormorants dive from the surface and can forage at notable depths.
Habitat
Northern Gannets are typically found in open ocean environments and breed on steep cliffs. Great Cormorants are more versatile, found in both coastal and inland waters, often seen perched on rocks or trees.
Voice
Vocalizations are not a primary distinguishing feature in the field; both species are relatively silent away from breeding colonies.