"IUCN3.1" . . . . . "Falco aesalon (Tunstall, 1771 (but see text)" . . "Aesalon columbarius (Linnaeus, 1758)" . "LC" . . "The merlin (Falco columbarius) is a small species of falcon from the Northern Hemisphere. A bird of prey once known colloquially as a pigeon hawk in North America, the merlin breeds in the northern Holarctic; some migrate to subtropical and northern tropical regions in winter."@en . . "Merlin"@en . . .