Barn-owl genus Tyto hunts ground prey on silent wings
Tyto, named in 1828 by Gustaf Johan Billberg from Greek tutō for owl, is the cosmopolitan heart of Tytonidae. Western, eastern and American continental forms plus many island lineages, some now extinct, share heart-shaped faces. Most measure about 33–39 cm with 80–95 cm wingspans.
Few bird genera spread as far as Tyto. Barn owls live almost everywhere except polar and desert regions, Asia north of the Himalayas and some Indonesian and Pacific islands. Swedish naturalist Gustaf Johan Billberg set up the genus in 1828 with Tyto alba as its type, borrowing the Ancient Greek tutō, "owl." Depending on place and species, people call them barn, grass, sooty, masked or field owls.
The old idea of a single global barn owl with about 28 subspecies has been broken up. The IOC list now treats it as four species: a western bird spanning Europe, Africa and western Asia, an American one, an eastern one ranging from Southeast Asia to Australasia, and the Andaman masked owl. A 2018 DNA study led by Vera Uva backed the split, and the American Ornithological Society and the Clements checklist followed in 2024, though BirdLife International had still not adopted it by May 2025.
Most measure 33 to 39 cm with wingspans of 80 to 95 cm. A big, heart-shaped facial disc, usually white, replaces the ear tufts of other owls, and instead of hooting they give a long, eerie screech. They hunt mostly at night, though in Great Britain and on some Pacific islands also by day, finding small mammals on the ground by sound. Pairs usually stay together for life. The female lays about four eggs in a hollow tree, old building or cliff crack and incubates alone while the male feeds her and the chicks. Populations can boom when prey is plentiful, and the barn owl is rated Least Concern overall.
Tyto has colonised islands better than other owls, and many island forms have died out. Some Mediterranean and Caribbean species were giants, such as Tyto gigantea from Italy's Gargano Peninsula, while Cuba had a dwarf. The Bahaman barn owl may have lasted into the 16th century, and the Puerto Rican barn owl possibly until 1912.
Source: Tyto
