Wasserfledermaus
The bats emerge at twilight to hunt for insects over the water. Their main diets consist mainly of non-biting midges and other midges, small flies, mayflies, and moths are regularly found in their diet. Daubenton's bat often eats its prey while still in flight. A seven-gram Daubenton's bat often returns weighing 11 grams after a one-hour feeding, increasing its body weight by 57%.