Unspotted Saw-whet Owl

The unspotted saw-whet owl (Aegolius ridgwayi) is a small "typical owl" in subfamily Surniinae. It is native to mountainous areas of Central America. == Taxonomy and systematics == The unspotted saw-whet owl's taxonomy is unsettled. The International Ornithological Committee (IOC) treats it as monotypic. The Clements taxonomy and BirdLife International's Handbook of the Birds of the World (HBW) assign it three subspecies, the nominate A. r. ridgwayi, A. r. tacanensis, and A. r. rostratus. HBW's assignment is provisional. A. r. tacanensis and A. r. rostratus were each described from a single specimen. The unspotted saw-whet owl and the northern saw-whet owl (A. acadicus) form a superspecies and some authors have proposed that they are a single species. == Description == The unspotted saw-whet owl is 18 to 21.5 cm (7.1 to 8.5 in) long and weighs about 80 to 90 g (2.8 to 3.2 oz). Its upperparts, throat, and upper breast are plain sepia brown and the lower breast and belly plain cinnamon buff. The tail is a darker brown and the wings generally a grayer brown. Its facial disk is brown with a narrow white border; the lores, chin, and "eyebrows" are whitish. It has yellow eyes. The two…