French: Océanite à queue fourchue German: Gabelschwanz-Wellenläufer Spanish: Paíño rabihorcado
J. F. Gmelin, 1789,
icy seas between America and Asia.
Two subspecies recognized.
Subspecies and Distribution
H. f. furcatus
(J. F. Gmelin, 1789) – N Pacific, breeding on N Kuril Is, Commander Is and Aleutian Is.
H. f. plumbeus
(Peale, 1848) – N Pacific, breeding on W coast of North America (Alaska S to N California).
20–24 cm; c. 59 g; wingspan 43–52 cm. Medium-sized to rather large grey storm-petrel with large head, short wings and forked tail. Forehead and central... read more
Very vocal at colonies, with two distinct vocalizations identified: most commonly given is a raspy... read more
Marine and pelagic, normally occurring over cold waters far from shore. Breeds on offshore islands... read more
Food and feeding
Mainly planktonic crustaceans (especially amphipods), small fish (mainly myctophids) and squid; also takes offal. Study of prey brought to... read more
Typically starts late Apr/Jun (generally later at higher latitudes and altitudes), but returns to colonies from late Mar (even earlier in... read more
Apparently disperses over adjacent waters, regularly occurring S to N Japan, off Hokkaido and N... read more
Status and conservation
Not globally threatened. Abundant, with total population estimated at c. 5,000,000 birds; most nest along coastal Alaska and Aleutian Is, where thought to be increasing, e.g... read more
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