Cepphus columba, Pigeon guillemot

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  Alcidae
- - Classification -
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Cepphus columba Pallas, 1811

Pigeon guillemot

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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Aves | Charadriiformes | Alcidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Others; depth range 0 - 45 m (Ref. 60377), usually 15 - 20 m (Ref. 60377). Temperate; 71°N - 32°N, 145°E - 116°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Eastern Pacific and the Arctic: Alaska to California. Temperate to subtropical.

Length at first maturity / Size / Weight / Age

Maturity: L_m ? range ? - ? cm Max length : 35.0 cm TL male/unsexed; (Ref. 8812); max. published weight: 487.00 g (Ref. 356)

Short description Morphology

Culmen: 4.39 cm; wing: 1.88 cm.

Total Length: 30 to 35 cm (Ref. 8812). A large species (Ref. 87784). Common depth of 15 to 20 m is foraging depth most preferred by species (Ref. 60377). Nearshore feeder (Ref. 87784). Pursuit diver; coastal; <15 km; water <20m deep (Ref. 356). Based on stable isotope analysis (SIA) diet study of egg albumin, belongs to higher N signature group (based on ratios of stable isotopes of nitrogen and carbon): piscivorous with pelagic foraging range. Aquatic courtship display such as calling and wing-raising, head dipping below the sea surface, and flipping below the sea surface or skittering. Typically nests in crevices. On the Farallon Islands, this species usurps nests of smaller Cassin's Auklet by destroying eggs or chicks thereby effectively lowering its habitat competitor's reproductive success. Severely affected by El Niño events by abandoning nesting attempts in the Farallon Islands in central California. Vulnerable to oil spill as a diving species; population still depressed, with over 50% decline, 9 years after the 1989 Exxon Valdez oil spill in Prince William Sound as an effect of persistent trace oil in the water that caused a decline in forage fish abundance (Ref. 87784).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

SAUP Database. 2006. (Ref. 356)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 07 August 2018

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

| FishSource |

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More information

Trophic Ecology

Food items
Diet composition
Food consumption
Food rations
Predators

Ecology

Population dynamics

Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance

Life cycle

Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Larval dynamics

Distribution

Countries
FAO areas
Ecosystems
Occurrences
Introductions

Human Related

Aquaculture profiles
Stamps, coins, misc.

Outreach

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Taxonomy

Common names
Synonyms
Morphology
Pictures

References

Internet sources

Estimates based on models

Preferred temperature (Ref. 115969): 4.9 - 11.2, mean 8.5 (based on 412 cells).

Vulnerability (Ref. 71543): Low vulnerability (25 of 100).

Price category (Ref. 80766): Unknown.

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