The roost of a pileated woodpecker usually has multiple entrance holes. These characteristics distinguish them from the smaller and darker-billed pileated woodpecker. Bird species include the Guadeloupe woodpecker, Antillean nighthawk and monk parakeets. The swamp also hosts numerous woodpecker and songbird species. The importance of tool use by woodpecker finch species differs between vegetation zones. Picus is a genus of birds in the woodpecker family. Kopaonik has 175 species of birds, including the protected ones like woodpecker and thrush. They have been observed stealing acorns from acorn woodpecker caches. The critically endangered Okinawa woodpecker is also endemic on this island. It nests in old woodpecker holes, often those of the great spotted woodpecker. They sometimes make use of the old nest of a woodpecker or barbet. This species has a bounding flight like a woodpecker. This species is similar to the Syrian woodpecker. Tree hollows and woodpecker holes are also used. These include the Louisiana pine snake and red-cockaded woodpecker.