Cocos Booby vs Brown Booby

Sula brewsteri compared with Sula leucogaster

Side-by-Side Comparison

Attribute Cocos Booby Brown Booby
Scientific Name Sula brewsteri Sula leucogaster
Order Suliformes Suliformes
Family Sulidae Sulidae
Conservation Status Not Evaluated Least Concern
Length
Wingspan 77.7 cm (30.6 in)
Weight 1285.4250000000002 g (45.34 oz) 1378.6750000000002 g (48.63 oz)
Diet -- --
Clutch Size 1-2 1-3
Population Trend

Habitat Comparison

Shared Habitats

Cocos Booby only

None

Brown Booby only

None

Conservation Status

Not Evaluated

Cocos Booby

Least Concern

Brown Booby

About These Birds

Cocos Booby

76–84 cm. Brown and white booby restricted to Cocos Island and nearby east Pacific islands; sometimes treated as subspecies of Brown Booby. Plunge-dives for fish in productive eastern Pacific waters. Near Threatened; small breeding range; feeds on flying fish and anchovy.

Brown Booby

64–74 cm. Dark brown above; white belly and undertail; yellowish bill. The most widespread booby; breeds pantropically on islands worldwide. Feeds on fish and squid near land by plunge-diving; often follows ships. Ground or bush nester; aggressive and bold near colonies.

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