A booby of rocky islands in the eastern Pacific. Males have a whiter face and gray bill; females have a paler brown head than female Brown Boobies.
Males have a whiter face and gray bill than Brown Boobies. Females have a paler brown head; the amount of white on the head and neck of males varies by subspecies.
It plunge-dives for small fish and nests on rocky cliffs and coastal islands.
An extinction-risk assessment has not been added yet.