Family: Laridae (Gulls, Terns, Skimmers)
Authority: Audubon, 1839
Red List Category
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Justification of Red List categoryThis species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be increasing, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Population size:
unknown
Population trend:
increasing
Extent of occurrence (breeding/resident):
656,000 km
2
Country endemic:
no
Attributes
Realm - Nearctic
IUCN System - Marine