Abstract
The food habits of the river otter (Lutra canadensis) were studied in Suisun Marsh, Solano County,California. One hundred and twenty scats were analysed by frequency of occurrence of food items for a one year period, and seasonal feeding patterns were determined. Major foods, in their order of importance, were crayfish, waterfowl, and fish. Crayfish consumption was high and constant throughout the year, but the take of fish and waterfowl varied according to season. Waterfowl consumption was proportional to waterfowl density. Some intake of plants was also noted.