The Brown Booby is closely related to the Gannet. Gannets commonly nest in large colonies on a few cliff tops on the east coast of Canada.
I found this one in the harbor at St George, Grenada. Early sailors called them “boobies” because they were unafraid of humans and were easy to kill.
Boobies are “pelagic” birds and spend most of their time far out at sea where they feed on small fish and squid which are captured by shallow plunge-dives.
The wingspan can be up to 140 cm