Band-rumped Storm-Petrel

Hydrobates castro




Northern Storm-Petrels (Hydrobatidae)

Code 4


Code 6



Egg Color:


Number of Eggs:


Incubation Days:

39 - 51

Egg Incubator:

Both sexes

Nest Location:

In a rock crevice.

Nest Material:






Band-rumped Storm-Petrel: Medium-sized mostly black or brown-black storm-petrel with a conspicuous thick white band across the rump forming a contrasting horseshoe shape; paler and browner coloring on wing bar across upper coverts; subtle narrow white fringes at the tips of the longest tertials. Head and most of the upperparts, including upperwing and tail, are black; large, shallowly notched tail; black bill, legs and feet. Sexes are similar. Juvenile like adult; greater upperwing coverts are grayer; slightly notched tail.

Range and Habitat

Band-rumped Storm-Petrel: Breeds on islands in both the Atlantic and Pacific Oceans. Atlantic populations are found in the Azores, Madeira, Cape Verde, Berlengas, St. Helena, and Ascension Island, while Pacific populations are found in the Galapagos Islands, Japan, and the Hawaiian Islands. Wanders widely in the non-breeding season.

Breeding and Nesting

Band-rumped Storm-Petrel: They are long-lived and may not breed until at least the third year of their 15 to 20 year life. They nest in colonies in rock crevices off cliffs, or in burrows on ocean islands.They breed throughout the year, with two different populations nesting in the same areas at different times. They lay one white egg that both parents incubate for 39 to 51 days.

Foraging and Feeding

Band-rumped Storm-Petrel: They feed only at sea and eat small fish, squid and crustaceans. They are found foraging or feeding at internal wave crests, where prey is caught at or just below the surface. Usually they forage during the day. They drink seawater; salt is excreted through specialized nasal glands and fluid shot outward through two short tubes along the top of bill.


Band-rumped Storm-Petrel: Peeping or chattering at nest.

Similar Species

Band-rumped Storm-Petrel: Leach's Storm-Petrel has deeply notched tail, rarely patters on ocean surface but has rapid erratic flight. Wilson's Storm-Petrel has squared, or even slightly rounded tail, with feet projecting beyond tail in flight. Has fluttery flight.

Back, rump, hindneck, wings, and crown.
The area between the uppertail coverts and the back of the bird.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X