Aves |
Charadriiformes |
Alcidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; djupintervall 0 - 120 m (Ref. 62202). Polar; 82°N - 27°N, 80°W - 43°E (Ref. 124582)
Northwest Atlantic, Eastern Atlantic and the Arctic: Polar to temperate.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm Max length : 45.0 cm TL hane/ej könsbestämd; (Ref. 8812); publicerad maxvikt: 719.00 g (Ref. 356)
Culmen: 3.45 cm; tarsus: 2.963 cm; wing: 21.13 cm.
Total Length: 40 to 45 cm; Wingspan: 63 to 66 cm (Ref. 8812). Found along coasts; <15 km (Ref. 356). In the North Sea off the east coast of Scotland and northern England, this species primarily forage inshore and feed on the sandeel, Ammodytes marinus (Ref. 95711). Known to be pursuit divers (Ref. 356). They surface-feed by scooping prey from the water and also able to exploit the water column by diving; carrying prey in their bills back to their colony. In nesting colonies, breeding pairs share incubation and chick-rearing duties. Adults feed their chicks with regurgitated food (Ref. 95711).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae
Breeds from northern Europe east to Russia, Iceland, Greenland, and coastal North America from Baffin Island south to the Maritime Provinces and Maine. Winters from Greenland south even to South Carolina, and in Europe to the Mediterranean. Eggs are laid from early June to early August (Ref. 87872).
Camphuysen, C.J.K. 1998 Razorbills Alca torda in Dutch waters. Limosa 71(2):69-77. (Ref. 7319)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Verktyg
Ytterligare information
Population dynamicsTillväxtMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundans PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
Preferred temperature
(Ref.
115969): 2.3 - 12.7, mean 8.1 (based on 1259 cells).
Resiliens
Hög, lägsta populationsfördubblingstid mindre än 15 månader (K=20.71-50.32).
Fishing Vulnerability
Low to moderate vulnerability (35 of 100).
Price category
Unknown.
