Family: Sulidae (Gannets, Boobies)

Authority: Lesson, 1831

Red List Category

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Justification of Red List category
This 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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to 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: decreasing

Extent of occurrence (breeding/resident): 211,000,000 km²

Country endemic: no

Attributes
IUCN System - Marine
Realm - Afrotropical
Realm - Indomalayan
Realm - Nearctic
Realm - Neotropical
Realm - Oceanian
Realm - Palearctic