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

Over the past two years the American Ornithological Society (AOS) has made significant changes to the taxonomic order of bird species. To accommodate these changes, the WSO has updated the Checklist of the Birds of Wisconsin in both 2017 and 2018. The taxonomic order shown below is correct as of the 59th Supplement of the AOS. Although there have been major changes in the order of species, this... Read More   

For many years, the scientific community accepted only those bird observations that could be substantiated by collected specimens. With the advancements in photographic equipment and technology, the criteria for rare bird documentation have been broadened beyond specimen records. Birders now make significant contributions to our knowledge of extralimital records, vagrancy patterns, and other... Read More   

Sandhill Crane Hunt WSO strives to alert members and the public to situations and practices that threaten Wisconsin’s bird populations. WSO provides the following information in the interest of educating its members as well as the general public regarding the possibility of a Sandhill Crane hunting season in Wisconsin. The Society recognizes that a major partner in our mission is the hunting... Read More   

Birding the Habitat Way The entire series of Birding the Habitat Way is published in the WSO Passenger Pigeon archives, which is available on-line at the University of Wisconsin Digital Collections. Here are links to the articles in the series: Wisconsin’s bird habitats: Introducing a new series. M.J. Mossman and P.M. Matthiae. 1988. v. 50:43-53. Birds of wet-mesic and wet prairies in... Read More   

WSO owns nearly 300 acres of important bird habitat in the state: 60 acres within the Buena Vista Prairie Chicken Management area of Portage County, and 267 acres in the Honey Creek valley of Sauk County. WSO’s ownership and sound management of these properties ensures their preservation for future generations. WSO has also conducted breeding bird inventories at Honey Creek and has recorded... Read More   

Wisconsin Society for Ornithology provides opportunities for all people to enjoy resident and migratory birds while being a leading steward of and ambassador for Wisconsin birds. WSO sponsors birding field trips throughout the year, hosts an annual birding convention, publishes a quarterly journal and monthly newsletter, offers research grants, and serves as an informational resource center on... Read More   

WSO and the Wisconsin Bird Conservation Initiative developed the Bird Monitoring Kit program to allow educators and students to study birds and their habitats. By learning about the local bird community and building bird identification skills, Bird Monitoring Kits help students gain a greater appreciation of the natural world and its conservation. Bird Monitoring Kits contain all of the tools... Read More   

The WSO Education Committee strives to further the appreciation of birds and bird-related issues among Wisconsin’s youth. We accomplish this by providing financial support to students wishing to pursue bird projects, as well as providing the tools and materials needed to study Wisconsin birds. We also highlight bird watching opportunities for youth in our monthly newsletter and on our events... Read More   

Beginning in 2014, the Wisconsin Society for Ornithology introduced a peer-reviewed science section in its Passenger Pigeon journal. This new section does not displace the regular contributions that have been part of the journal for decades, such as Seasonal Reports, Christmas Bird Count summaries, committee reports, etc. However, our hope is that the peer-reviewed section will attract more... Read More   

The Passenger Pigeon Journal THE PASSENGER PIGEON, WSO’s flagship publication, is a quarterly journal featuring a wide range of articles on Wisconsin birds, seasonal field sightings (including Christmas, May, and Big Day counts), and scientific research reports. Questions on article submissions can be directed to editor Michael John Jaeger at In 2014, WSO... Read More