A Manual of Philippine Birds

by Richard C. McGregor

Characters same as those given in the key to Families.

Subfamilies.

• a¹. Ear-conch not larger than eye and without an operculum; portion of facial disk below the eye greater than the area above the eye. Buboninæ (p. [249])
• a². Ear-conch much larger than eye and with a large operculum; facial disk distinct and extending as far above as below the eye. Striginæ (p. [270])

Subfamily BUBONINÆ.

Genera.

• a¹. Toes without bristles.
  • b¹. Larger; wing, 230 mm. or more, but relatively shorter, falling short of the end of tail. Pseudoptynx (p. [249])
  • b². Smaller; wing, 220 mm. or less, but relatively longer, when folded reaching nearly or quite to tip of tail. Otus (p. [252])
• a². Toes scantily clothed with rather stiff bristles. Ninox (p. [260])

Genus PSEUDOPTYNX Kaup, 1848.

Large; ear-tufts moderate; primaries but little longer than secondaries; plumage full and streaked; legs closely feathered to the toes; toes naked.

Species.

• a¹. Larger; wing, 330 to 380 mm.
  • b¹. Smaller and lighter; wing, about 350 mm. philippensis (p. [250])
  • b². Larger and darker; wing, about 375 mm. mindanensis (p. [251])
• a². Smaller and darker; wing, about 235. gurneyi (p. [250])