Fisheries Research Report No. 1708, 1965

Michigan Department of Conservation
Research and Development Report No. 44
Institute for Fisheries Research Report No. 1708, 1965
Foods Eaten by Aquatic Fish-Eating Birds

Jerry Peterson

This report concerns the food habits of loons, gulls, grebes and mergansers collected in 1963 and 1964, mainly on the northern and eastern shores of Lake Michigan. Extensive mortalities of loons and gulls that occurred in late summer and the fall of these years instigated the study. The mortalities are described in another report [Research and Development Report No. 25]. Except for the following paragraph, this discussion deals with the materials from 134 loons, 28 gulls, 16 grebes, and 2 mergansers that were examined recently.