Ключевые слова: air, alive, animal, background, bat, beautiful, black, brown, closeup, common, cute, dark, darkness, ears, echolocation, europe, european, fauna, flight, fly, flying, hair, insectivore, insectivorous, isolated, life, mammal, mid, motion, nathusius, natural, nature, netherlands, night, nocturnal, pipistrelle, pipistrellus, pipstrellus, predator, small, sonar, wild, wildlife, wing, wings,