Summary ⁶

The Wilson's Warbler (Cardellina pusilla) 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.

Distribution ⁷

occurs (regularly, as a native taxon) in multiple nations

Habitat and ecology ⁸

Systems

• Terrestrial
• Freshwater

Migration ⁹

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: Yes. At least some populations of this species make annual migrations of over 200 km.

Migrants arrive in Sierra Nevada nesting areas in late May; on California coast, males begin to arrive in late March (Stewart et al. 1978). Migrants arrive in the southern winter range in mid-September, depart by mid-May (Stiles and Skutch 1989).

Sources and Credits

1. (c) Michael Woodruff, some rights reserved (CC BY), http://www.flickr.com/photos/38972116@N00/26107945
2. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
3. (c) Flickr, some rights reserved (CC BY-NC), http://farm4.static.flickr.com/3592/3495671052_3a9c1e830c_b.jpg
4. (c) Greg7 on Flickr, some rights reserved (CC BY), https://upload.wikimedia.org/wikipedia/commons/thumb/c/ca/Wilsonia_pusilla_Vancouver.jpg/460px-Wilsonia_pusilla_Vancouver.jpg
5. (c) marikcl, some rights reserved (CC BY-NC), uploaded by marikcl
6. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Cardellina_pusilla
7. (c) NatureServe, some rights reserved (CC BY-NC), http://eol.org/data_objects/28864360
8. (c) International Union for Conservation of Nature and Natural Resources, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/31304124
9. (c) NatureServe, some rights reserved (CC BY-NC), http://eol.org/data_objects/28864364

More Info

• iNat taxon page
• All About Birds
• Animal Diversity Web
• Biodiversity Heritage Library
• BOLD Systems BIN search
• CalPhotos
• Global Biodiversity Information Facility (GBIF)
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• VertNet
• Xeno-canto

Range Map

(c) Discover Life and original sources, some rights reserved (CC-BY-NC-SA)

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