Join for FREE
It only takes a minute!
38â€“45 cm (15-17Â¾ in)
Tropical oceans: Circumglobal.
There are 5 subspecies:
A. s. plumbeigularis is usually considered invalid, and sometimes considered a subspecies of A. s. pileatus .
Tropical and sub-tropical islands. They are a mainly pelagic species; breeding on oceanic islands.
They are surface feeders; their dies consists almost entirely of small fish and squid.
The nest on cliffs or in trees. A single egg is laid. They nest throughout the year in the Galapagos.
Click on photo for larger image
 External Links