Aves |
Gaviiformes |
Gaviidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Others. Subtropical; 78°N - 33°N, 3°E - 80°W (Ref. 124582)
Northern and Central Pacific, Atlantic and the Arctic. Polar to subtropical.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Found on beach and shoreline (Ref. 116102). Inhabits lakes and lakeshores. Feeds primarily on fish and minimally on plant material. Breeding pairs highly territorial, employing specific vocalizations and aggressive displays and postures when sensing threat. Copulation takes place on land. The male selects the nest site; egg clutch incubation approx. 27 days with both parents taking turns. Typical brood number, 2; with both parents feeding the young; commonly, only one of the 2 survives probably due to competition for food within the brood (Ref. 95186).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lepage, D. 2007 Avibase -the World Bird Database. http://www.bsc-eoc.org/avibase/avibase.jsp [accessed 09/07/2007]. (Ref. 7816)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycleReproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
