Brown Booby vs Pelagic Cormorant

In short

The Brown Booby and Pelagic Cormorant are both seabirds but differ significantly in appearance and behavior. The Brown Booby is robust with a distinctive brown and white plumage, while the Pelagic Cormorant is more slender with dark, iridescent plumage. Observing their flight patterns and habitats can also aid in differentiation.

Identification tips

1. Look for the Brown Booby's brown and white plumage contrast. 2. Note the Pelagic Cormorant's dark, iridescent plumage. 3. Observe the Brown Booby's plunge-diving behavior versus the Pelagic Cormorant's surface diving and wing-drying habits. 4. Consider habitat: Brown Boobies are more pelagic, while Pelagic Cormorants are coastal.

Size

Brown Booby is larger and more robust compared to the slender Pelagic Cormorant.

Plumage

Brown Booby has a contrasting brown head and upperparts with white underparts. Pelagic Cormorant is uniformly dark with a glossy, iridescent sheen, lacking the stark contrast seen in the booby.

Behaviour

Brown Boobies are known for their plunge-diving from heights, while Pelagic Cormorants dive from the surface and are often seen drying their wings.

Habitat

Brown Boobies prefer open ocean and nest on islands with minimal human disturbance. Pelagic Cormorants are coastal, often found on rocky shores and cliffs.

Voice

Vocalizations are not a primary distinguishing feature as both species are generally silent at sea.