Long-eared Owls are the only owls to winter in groups. In the winter, they create collective roosts, numbering from a few to a dozen, and sometimes even more individuals. In Poland, individuals from the north of the country overwinter in areas further south, although this is not a rule. The largest concentrations of wintering Long-eared Owls in Europe can be seen in Serbia (Kikinda), where once as many as 165 Long-eared Owls were observed on one tree. For this reason, Kikinda is the world capital of these owls, and there is a huge fine for disturbing these birds. The phenomenon of group wintering of Long-eared Owls is poorly understood, because this bird is nocturnal, is poorly detectable and has a complicated ecology. It is easiest to find wintering grounds in city parks, cemeteries, housing estates and on various types of properties and in gardens with groups of trees. Usually, these owls perch on the branches closer to the trunk, mainly on spruces, sometimes on thujas. I once observed 7 Long-eared Owls on one willow. Long-eared Owls fly out of roosts to feed at dusk to nearby fields, forest edges bordering meadows, wastelands and mid-forest clearings. They feed mainly on voles which they hunt in open areas. The Long-eared Owl, like most owls, does not digest bones or hair of prey and regurgitates the undigested remains of prey in the form of pellets after a meal. Thanks to this, it is easy to identify the roosting places of this owl. Meeting and observing numerous Long-eared Owls during the day is an amazing emotion and great joy for every birdwatcher.