Predation of a waterfowl chick by largemouth bass in a small creek near Lake Biwa

Abstract

We first documented the predation of a waterfowl chick by the largemouth bass although a few lines of circumstantial evidence have suggested this predation taking place in the past. We dissected a male bass (421 mm in standard body length) caught in Anjiki river, a small creek that flows into Lake Biwa, and found in the stomach an unimpaired chick (55.4 g in wet weight) of either Anas platyrhynchos, A. poecilorhyncha, or the hybrid.