Horicon Marsh Bird Club
- Includes event calendar, bird sightings, newsletter, and membership information.
- http://www.horiconmarshbirdclub.com/

Trinity Mountain Outdoors Natural History Magazine
- Detailing where, when and how to see birds, flowers and big game animals in Minnesota and Wisconsin. Contains descriptions, with photographs and sound recordings of many birds.
- http://www.trmichels.com/TMOBirdPage.htm

Bird Checklists
- Seasonal checklists for 9 refuges in Wisconsin.
- http://www.npwrc.usgs.gov/resource/birds/chekbird/r3/55.htm

Alma Tundra Swan Watch
- Tundra Swan migration through Rieck's Lake Park in Alma.
- http://www.almaswanwatch.org/

Bird Digiscoping by Mike McDowell
- High quality images of warblers, sparrows, other passerines, birds of prey, and water birds, mostly from Wisconsin.
- http://www.birddigiscoping.com/

Horicon Marsh Wildlife
- Articles about the birds of Horicon from the Wisconsin Department of Natural Resources.
- http://www.dnr.state.wi.us/org/land/wildlife/reclands/horicon/Nathist/wildlife/

Wisconsin Birding Hotspots
- Brief guide to 26 areas.
- http://www.wisconline.com/attractions/birding.html

WisBirdN
- Recent messages from the Wisconsin birding e-mail group.
- http://birdingonthe.net/mailinglists/WISC.html

Wisconsin Backyard Birding
- Photos and species accounts.
- http://www.baldeagleinfo.com/birds/birds.html

Wisconsin Breeding Bird Atlas
- Methodology, data, maps, and images from project conducted 1995-2000.
- http://www.uwgb.edu/birds/wbba/

Nicolet National Forest Bird Survey
- Methods, news, and results, including site maps for each species.
- http://www.uwgb.edu/birds/nnf/

Wisconsin Society for Ornithology
- Birding news, rare bird alerts, events, publications, programs and projects, checklist, and bookstore.
- http://www.uwgb.edu/birds/wso/

Chequamegon Bird Club
- Based in Medford. Meetings, field trips, newsletter, forum, and frequently asked questions.
- http://www.sws-wis.com/cbc/

WisBirdN Bird Photos
- Photos of Broad-billed Hummingbird, Fork-tailed Flycatcher, and Ash-throated Flycatcher in Wisconsin.
- http://www.sherkow.com/wisbirdn/