In the south the Long-eared Owl is chiefly a resident, while northern birds are short-distance migrants.
South: southern Swedish Long-eared Owls remain in the country year-round near their hunting grounds.
North: birds further north move south in winter, and the population shifts according to the rodent supply.
Day roosts: in winter owls often gather in communal day roosts in dense spruce or scrub, sometimes tens of birds in the same stand in parks and cemeteries.
Under the trees at a day roost one often finds plenty of pellets, which is a good way to reveal an overwintering group.