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Bird banding at Point au Sable.
Cofrin Center for Biodiversity


The Cofrin Center for Biodiversity has a long history of bird related research in the western Great Lakes states. We are pleased to offer several bird related resources

Nicolet National Forest Bird Survey

The Nicolet National Forest encompasses 360,000 hectares of mixed hardwood-conifer forests, lowland swamps, glacial lakes, and wetlands in northeastern Wisconsin. It comprises the eastern portion of the Chequamegon-Nicolet National Forest, with headquarters in Rhinelander and Park Falls, Wisconsin. NNF The Bird Survey takes place each year during the second weekend in June. Everyone with an interest in birds and a desire for adventure is invited to participate in the Bird Survey. Volunteers work in small groups led by at least one expert in bird song identification. Computerized results are used to guide forest management policies and have been the subject of numerous scientific research articles and master's theses. Results also provide visitors with information about habitat preferences and "hot-spots" for northern Wisconsin's bird species.

The survey is held the second weekend in June every year. For more information, or to be included on the annual mailing list, contact: Robert Howe

Egg Database

This searchable database is designed to assist in the identification of bird eggs for species that breed in Wisconsin and nearby states. Resources include color photographs of eggs, descriptions of nests and clutch size, egg measurements, and breeding distribution maps. Species nomenclature follows the most recent Checklist of North American Birds published by the American Ornithologists' Union. Images and descriptions are available for 250 species, including a few that breed in neighboring states and are likely to breed in Wisconsin and one extinct species (the Passenger Pigeon) that formerly bred Wisconsin.

Birder Certification Online

The Birder Certification Online program provides a rigorous method for verifying field identification skills of both professional and non-professional bird observers. A major goal is to help validate the integrity of bird inventory and monitoring projects by improving and documenting birder identification skills. The program also provides an educational tool for students and recreational birders of all skill levels. Birder Certification Online is a project of the Cofrin Center for Biodiversity at the University of Wisconsin-Green Bay, with funding and collaboration from the Wisconsin Department of Natural Resources, the Wisconsin Bird Conservation Initiative, the National Park Service, and the U.S. Fish & Wildlife Service.