This summer a female bat of the species two-color leather came to Konstantin from Volzhsk for temporary overexposure. The animal got into the apartment through the window. The mouse had a badly frayed membrane, but given that the wound was rather old and the edges of the membrane were well overgrown, this did not affect the quality of the flight. The animal was weighed, the length of the forearm was measured and marked with a ring with a number. The good weight also indicated that the condition of the wing had practically no effect on the quality of the flight, so that several training flights were made to make sure of this. In the evening, the animal was fed and released outside the city.