Aves | Ciconiiformes
Environment: milieu / climate zone / depth range / distribution range
Others; depth range 0 - 1 m (Ref. 93225). Subtropical; 5°N - 42°S, 96°W - 71°W
Southeast Pacific. Tropical to subtropical
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 57.0 cm TL male/unsexed; (Ref. 84934); max. published weight: 740.00 g (Ref. 356)
The world's only night-feeding gull; It pursuits squid and nocturnal fish at open sea (Ref. 356). Breeding attempts occur between migration events (Ref. 93225). It feeds by surface plunging, having access to only 1 meter of the water column (Ref. 93225), and feeds between 16-32 km from coastline (Ref. 356). Foraging activity increases following the DVM cycle, during new moon periods (Ref. 93225). Breeding is asynchronous, with breeding periods of different birds overlap to varying degrees (Ref. 93225).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Breeding is asynchronous, with breeding periods of different birds overlap to varying degrees.
Enticott, J. and D. Tipling. 1997. (Ref. 84934)
IUCN Red List Status (Ref. 123251)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models