LC
Willow Warbler Phylloscopus trochilus



Family: Phylloscopidae (Leaf-warblers)

Authority: (Linnaeus, 1758)

Red List Category

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Justification of Red List category
This species has an extremely large range and the population size is extremely large, hence does not approach threatened thresholds for the range or population size criteria. 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. For these reasons the species is evaluated as Least Concern.

Population size: 236000000-358000000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 23,100,000 km2

Country endemic: no

Attributes
Realm - Afrotropical
Realm - Palearctic
IUCN System - Freshwater
IUCN System - Terrestrial
AEMLAP

Recommended citation
BirdLife International (2024) Species factsheet: Willow Warbler Phylloscopus trochilus. Downloaded from https://datazone.birdlife.org/species/factsheet/willow-warbler-phylloscopus-trochilus on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/11/2024.