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Fratercula corniculata
Fratercula corniculata (Naumann, 1821)
Horned puffin
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Family:  Alcidae ()
Max. size:  41 cm TL (male/unsexed); max.weight: 619.0 g
Environment:  pelagic; marine; depth range 0 - 29 m
Distribution:  Pacific Ocean and the Arctic. From Chukchi Sea and Alaska, south to Kuril Is. west to Japan and Russia and east to California. Subtropical to polar.
Diagnosis:  Culmen: 4.83 cm; tarsus: 3.07 cm; wing: 18.97 cm.
Biology:  Total Length: 36 to 41 cm; Wingspan: 56 to 58 cm (Ref. 8812). With sperm-storage glands allowing delayed fertilization of ovum (Ref. 87784). Plunge diver; continental shelf; <100 km (Ref. 356). As in all seabirds, copulation takes place ashore and the presence sperm-storage glands allow delayed fertilization of ovum out at sea. Vulnerable to oil spill as a piscivore; saw 50% decline in population from 1989 in Prince William Sound after the Exxon Valdez oil spill (Ref. 87784). Nests on rock crevices and cliffs (Ref. 62200).
IUCN Red List Status: (LC); Date assessed: 19 February 2020 Ref. 123251)
Threat to humans: 
Country info:   
 

Source and more info: www.sealifebase.org. For personal, classroom, and other internal use only. Not for publication.



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