Plecotus auritus, commonly known as the brown long-eared bat, is noted for its remarkably large ears, which are nearly as long as its body. This species inhabits woodlands and often roosts in tree cavities or bat boxes. Its diet primarily consists of moths and insects, which it hunts with agile flight and exceptional hearing.

The species P. auritus, commonly known as the European long-eared bat or brown long-eared bat, is native to Europe and parts of North Africa and western Asia. It is widely distributed across the continent, from the British Isles and western Europe to Russia and the Caucasus region. The species is also found in the Mediterranean, including parts of North Africa.

The European long-eared bat typically inhabits temperate regions with a preference for woodlands, forests, and areas with abundant tree cover. It is also found in mixed agricultural landscapes and urban areas where suitable roosting sites are available. The climate in these habitats ranges from temperate with cold winters and warm summers in northern and central Europe to more Mediterranean climates in southern regions.

P. auritus is primarily an insectivorous bat, feeding on moths, beetles, and other small flying insects. It employs a gleaning hunting technique, catching prey from the surfaces of leaves and branches. This species is adapted to roost in tree holes, old buildings, and bat boxes, showing a preference for secluded and sheltered environments that provide protection during the day. The long ears of this bat enhance its ability to detect prey through echolocation, even in dense vegetation.