Wilson's Warbler

Wilson's Warbler exhibit dynamic and active behaviors, characterized by constant movement while foraging, commonly fluttering and hovering within forest undergrowth for insects. They actively defend territories by displaying aggressive postures and vocalizing sharp calls upon intrusion by conspecifics. Unique to their behavior is a tail-cocking display, used to establish dominance. During breeding, they engage in both monogamy and extra-pair copulation, with males participating in feeding young alongside females, who solely manage incubation and brooding. A remarkable behavior is the broken-wing display, a tactic to divert predators from nests. Post-breeding, relationships dissolve, with repartnering occurring annually. In winter territories, some individuals assert dominance, while others integrate into mixed-species flocks.

The breeding habitat is fairly open woodland with undergrowth or shrubs and thickets in moist areas with streams, ponds, bogs, and wet clearings. Wilson's warbler breeds in northern Canada and the western US; it winters in overgrown clearings and coffee plantations, forest edges, deciduous forests, tropical evergreens, pine-oak forests, mangroves, thorn-scrub, riparian gallery forests, brushy fields, and mixed forests . At all seasons, it prefers secondary growth, riparian habitats, lakes, montane and boreal forests with overgrown clearcuts. It is a very rare vagrant to Western Europe.

Not globally threatened.