| Family: |
Alcidae () |
| Max. size: |
25 cm TL (male/unsexed); max.weight: 202.5 g |
| Environment: |
others; marine; depth range 0 - 36 m |
| Distribution: |
Pacific Ocean: California to the Aleutian Islands. Boreal to subtropical. |
| Diagnosis: |
Culmen: 1.6 cm; tarsus: 1.59 cm; wing: 12.7 cm. |
| Biology: |
An endangered species. Nesting habitat protected under ESA in the U.S. (Ref. 87784). Total Length: 24 to 25 cm (Ref. 8812). Coastal; can be found offshore up to 300 km; thermal fronts, water <30 m deep; glacial-affected. Pursuit divers (Ref. 356). Crepuscular to nocturnal. Mate prospecting thru display and calls; nocturnal vocal displays minimal. Direct or indirect intra- and interspecific competition for nest sites. Nests in trees (Ref. 87784). Breeding pairs maintain isolation from colony until the eggs are laid (Ref. 95051). Feeds on hatchery-released pink salmon and chum salmon in Prince William Sound, Alaska. Population decline associated with mortality in fishing nets (Ref. 87784). |
| IUCN Red List Status: |
Endangered (EN); Date assessed: 27 July 2020 (A2bce+3bce+4bce) Ref. 123251)
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| Threat to humans: |
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| Country info: |
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