大象传媒

A look at some animals that are active at night, and have to remain as quiet as possible. Barn owls are seen hunting silently, while voles make very little noise to avoid detection. A bat uses its specially adapted large ears to listen for moths. Fishing cats stalk their prey without making a sound. As daylight comes, the volume level increases. Birds sing in the 'dawn chorus'. A lyre bird mimics the call of a kookaburra. It also copies the sounds of a car alarm, camera and chainsaw. Howler monkeys demonstrate why they are some of the noisiest animals on the planet.