Bats are highly effective hunters and a single bat can eat over 3000 midges in one night so, without them, summer evenings could be a lot more painful.
			Bats are thought by North American Indians to be protectors of mankind. This is thought to be the origin of the Batman cartoon superhero.
			Bats are not blind; they have quite good eyesight, but they "see" in the dark by means of echolocation, which uses high frequency sound and works in a similar way to radar.
			DNA studies have shown that bats are more closely related to people than to mice.
			The smallest UK bat is only 4cm long and weighs only 5 grams; that is less than a twenty pence piece.