Promoting the enjoyment, study, and conservation of Wisconsin's birds.

This Checklist of Wisconsin Birds contains all of the 437 valid species on the Wisconsin state list. Nomenclature and sequence follow the Seventh Edition of the Check-List of North American Birds, provided by the Classification Committee of the American Ornithologists’ Union, and the recently published 54th supplement to that Check-List.

Decisions regarding the inclusion of species on this list are made by the WSO Records Committee. Contact for more information.

The checklist is available as a PDF file or an Excel Spreadsheet:

Last updated January 15, 2019.