Animal Sciences Commons^™

Breeding Bird Populations In A Proposed Wetland Treatment Area Of Northern Minnesota, Joann M. Hanowski, Gerald J. Niemi

Journal of the Minnesota Academy of Science

A census of breeding bird populations was taken in a 40- hectare wetland near Biwabik, Minnesota, prior to the use of this wetland for phosphorus removal from treated wastewater. The wetland was comprised of four distinct habitat types: shrub swamp, black ash (Fraxinus nigra) forest, open coniferous forest, and closed coniferous forest. We used a line transect (about 4 km in length) to document species composition, relative species abundance, and habitat associations of the bird community. A total of816 individuals (mean= 204) and 45 species (mean = 34) were observed during four censuses in June and July, 1985. Two distinct …