Quick-eared Brown (Plecotus auritus Linnaeus, 1758) - A medium-sized bat. Body length - 42 – 50 mm, the distance between the wings tarpugalių - 240 – 285 mm, body weight - 6 – 12 g. Light brown fur. The eyes are large, Wings broad, feet high, Nagele and long thumb. Exclusive feature - a long, net 3 – 4 times longer than other bat ears. Žiemodamas ears tucked under the wings, but still came out kramsliai. From time to time during the wintering both ears or one of them comes out from under the wings and saggy down. During the warm season dormant ground game usually ears cocked back like a ram or goat horns.
Ambient ultragarasas - 40 kHz (31,7 – 45 kHz). However, it is more fragile and almost impossible to capture detector - heard only 2 – 5 m will leave. Starts to fly 45 – 65 my. after sunset and hunt all night. Forest insect catching, Parks, gardens, parks, pamiškėse, water bodies and over their. Sometimes vabdžius catching buildings and butterfly wings on the floor speak of quick-eared business. Flying slowly, can easily maneuver between the trees. Ability to collect insects from trees or shrubs - thought, its large ears that hear, even crawling insects.
This is the normal running Lithuania, but sparse species. Live in different habitats, evades and cities. Found in both seasonal, and wintering. Dienoja bird and bat nesting-boxes, tree hollows, old buildings, church towers and belfries, sometimes even after moving window windowsills. In spring, females gather in the offspring of breeding colonies after 10 – 20 individuals, with up to and 100 ground game. Affectionate and sedentary - feed 400 – 1000 m radius of roosting sites, and wintering grounds are also looking for as close to the breeding sites. Overwinter mostly alone underground structures, foresters occasionally sees the old, thick tree hollows. Atsprūs cold - winter in choosing locations, with indoor temperature is 0 – 5 0C. Occurs in the detection of quick-eared and colder indoors, where they are in the frozen-hearted as ice.
Lithuania can be found in other types of quick-eared - gray quick-eared (Plecotus austriacus). Both quick-eared vary in color and some other morphological data.