✔ 最佳答案
There are some 220–225 extant species of owls, which are subdivided into two families; typical owls (Strigidae) and barn-owls (Tytonidae).
Typical owls
圖片參考:
http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Strix_aluco_Pfahlhaltung_1.jpg/180px-Strix_aluco_Pfahlhaltung_1.jpg
圖片參考:
http://en.wikipedia.org/skins-1.5/common/images/magnify-clip.png
A Long-eared Owl, Asio otus, in erect pose.
Megascops: screech-owls, some 20 species
Otus: scops-owls; probably paraphyletic, about 45 species
Pyrroglaux: Palau Owl
Gymnoglaux: Bare-legged Owl or Cuban Screech-owl
Ptilopsis: white-faced owls, two species
Mimizuku: Giant Scops-owl or Mindanao Eagle-owl
Bubo: horned owls, eagle-owls and fish-owls; paraphyletic with Nyctea, Ketupa and Scotopelia, some 25 species
Strix: earless owls, some 15 species
Ciccaba: four species
Lophostrix: Crested Owl
Jubula: Maned Owl
Pulsatrix: spectacled owls, three species
Surnia: Northern Hawk-owl
Glaucidium: pygmy-owls, about 30–35 species
Xenoglaux: Long-whiskered Owlet
Micrathene: Elf Owl
Athene: 2–4 species (depending on whether Speotyto and Heteroglaux are included or not)
Aegolius: saw-whet owls, four species
Ninox: Australasian hawk-owls, some 20 species
Uroglaux: Papuan Hawk-owl
Pseudoscops: Jamaican Owl and possibly Striped Owl
Asio: eared owls, 6–7 species
Nesasio - Fearful Owl
Mascarenotus: Mascarene owls, three species; extinct (c.1850)
Sceloglaux: Laughing Owl; extinct (1914?)
Grallistrix: stilt-owls, four species; prehistoric
Ornimegalonyx: Caribbean giant owls, 1–2 species; prehistoric
Barn-owls
Genus Tyto: typical barn-owls, stand up to 3 feet (0.91 m) tall some 15 species and possibly one recently extinct
Genus Phodilus: bay-owls, 1–2 extant species and possibly one recently extinct