Owls don't usually build nests, instead often making their homes in hollow trees. But large owls can rarely find trees with hollows big enough for them, and when their breeding season arrives they use cliff caves or the nests of crows or other birds.
貓頭鷹不築巢，通常以樹洞為家，大型的貓頭鷹不易找到適合棲身的樹洞，繁殖季就利用峭壁洞穴、烏鴉等其他鳥類的巢。