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The genus ''Tyto'' includes all barn owls (family Tytonidae) except for the bay owls (subfamily Phodilinae, genus ''Phodilus'') - that is, the true barn owls, the grass owls and the masked owls collectively making up the subfamily Tytoninae. They are darker on the back than the front, usually an orange-brown colour, the front being a paler version of the back or mottled, although there is considerable variation even amongst species. ''Tyto'' owls have a divided, heart-shaped facial disc, and lack the ear-like tufts of feathers found in many other owls. ''Tyto'' owls tend to be larger than Bay-owls. The name ''tyto (τυτώ)'' is onomatopeic Greek for owl. Throughout their evolutionary history, ''Tyto'' owls have shown a better capability to colonize islands than other owls. Several such island forms have become extinct, some long ago, but some in comparatively recent times. A number of insular barn-owls from the Mediterranean and the Caribbean were very large or truly gigantic species. ==Systematics== Living and recently extinct species - and some notable subspecies - of barn owls are: * Greater sooty owl, ''Tyto tenebricosa'' * Lesser sooty owl, ''Tyto multipunctata'' * Australian masked owl, ''Tyto novaehollandiae'' * * Tasmanian masked owl, ''Tyto (novaehollandiae) castanops'' * Golden masked owl, ''Tyto aurantia'' * Moluccan masked owl, ''Tyto sororcula'' or ''Tyto (novaehollandiae) sororcula'' * * Buru masked owl, ''Tyto (sororcula) cayelii'' or ''Tyto (novaehollandiae) cayelii'' - long known only by two specimens collected in 1898 and 1921 until a voice recording in 2009 confirmed its further existence * Seram masked owl, ''Tyto almae'' * Manus masked owl, ''Tyto manusi'' or ''Tyto (novaehollandiae) manusi'' * Taliabu masked owl, ''Tyto nigrobrunnea'' * Minahassa masked owl, ''Tyto inexspectata'' * Sulawesi owl or Sulawesi masked owl, ''Tyto rosenbergii'' * * Peleng masked owl, ''Tyto rosenbergii pelengensis'' - probably extinct (mid-20th century) * Barn owl or common barn owl, ''Tyto alba'' * * Eastern barn owl, ''Tyto (alba) delicatula'' * * Andaman masked owl or Andaman barn owl, ''Tyto (alba) deroepstorffi'' * Ashy-faced owl, ''Tyto glaucops'' * Red owl, ''Tyto soumagnei'' * African grass owl, ''Tyto capensis'' * Eastern grass owl, ''Tyto longimembris'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tyto」の詳細全文を読む スポンサード リンク
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