Bird Guide

Wilson's Warbler

Cardellina pusilla

Least ConcernInvertebratesForestCup nestTiny · 7 g

About the Wilson's Warbler

Wilson's warbler is a small New World warbler. It is greenish above and yellow below, with rounded wings and a long, slim tail. The male has a black crown patch; depending on the subspecies, that mark is reduced or absent in the female. It breeds across Canada and south through the western United States, and winters from Mexico south through much of Central America. It is a very rare vagrant to western Europe.

Text adapted from Wikipedia, licensed CC BY-SA 4.0.

ID tip

Wilson's warbler is a small passerine, ranging from 10 to 12 cm (3.9 to 4.7 in) in length, with a wingspan of 14–17 cm (5.5–6.7 in) and a mass of 5–10 g (0.18–0.35 oz). It has a plain green-brown back and yellow underparts. The male has a small black cap. Males of the western race C. p. chryseola are greener above and brighter than males of the eastern, nominate race. Individuals from Alaska and the west-central portion of the species' range average slightly larger than those found in eastern and Pacific coastal populations. Its song is a chattering series of loud descending notes.

Text from Wikipedia, licensed CC BY-SA 4.0.

What the Wilson's Warbler sounds like

Recording: Peter Wilton · CC BY-SA 4.0 · via xeno-canto
Recording: Jonathon Jongsma · CC BY-SA 3.0 · via xeno-canto
Recording: Jonathon Jongsma · CC BY-SA 3.0 · via xeno-canto

Where the Wilson's Warbler lives

Regular rangeRare visitor

Recorded as a rare visitor in Portugal, United Kingdom, Ireland.

When to see the Wilson's Warbler

Peak activity in May · a passage migrant species across most of its range

Easily confused with

Side by side: Canada Warbler vs Wilson's Warbler

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