. Handbook of birds of the western United States including the great plains, great basin, Pacific slope, and lower Rio Grande valley . * 2. With ear tufts. 3, Ear openings small Bubo, p. 185. 3. Ear openings large, reaching almost to top of skull. Asio, p. Without ear tufts. 3. Wing 9 inches Surnia, p. 188. 3. Wing 12 to 19. 4. Ear openings small, the two ears not distinctly dif-ferent Nyctea, p. 187. 4. Ear openings very large, the two strikingly Toes feathered to claws. Scotiaptex, p. Tips of toes exposed . . Syrnium, p. 177. GENUS ASIO. General Characters. — Ear
. Handbook of birds of the western United States including the great plains, great basin, Pacific slope, and lower Rio Grande valley . * 2. With ear tufts. 3, Ear openings small Bubo, p. 185. 3. Ear openings large, reaching almost to top of skull. Asio, p. Without ear tufts. 3. Wing 9 inches Surnia, p. 188. 3. Wing 12 to 19. 4. Ear openings small, the two ears not distinctly dif-ferent Nyctea, p. 187. 4. Ear openings very large, the two strikingly Toes feathered to claws. Scotiaptex, p. Tips of toes exposed . . Syrnium, p. 177. GENUS ASIO. General Characters. — Ear openings immense, almost equal to height ofskull; ear tufts more or less developed ; wings about twice as long as tail;feet closely feathered to ends of toes. KEY TO ADULTS. 1. Ear tufts short accipitrinus, p. 177. 1. Ear tufts long wilsonianus, p. 175. 366. Asio wilsonianus {Less.). Long-eared Owl. Ear tufts dark brown, conspicuous; face mainly yellowish brown; underparts whitish and yellowish, with dark brown shaft streaks and hori-zontal bars on belly: flanks yellowish brown, unspotted; upper parts 176 HORNED OWLS, Dept. ot 243. Long-iwed Owl. mottled i^ray, tawny, ami blaokiah ; \\ini;s aiul tail barvod. Ijniqth ;1;{-Ui, wiiio- lUXMLMH), tail (, bill.()5. Distribution. —Teinpt>iato Ntirth Aiiu>rita,stiai;rs o( strtauis. Ia/j/s : > to (>, white. Food. — hjjnrious rotlents. whieh it destroysin vast numbers, riulonu cand owl spiMuls its days mostlyin tlu> thickest coxcv it can tiiul, but wIumithis is iu>t (IciisoiMioiiuli io v\cnl disiovrry it protocts ilsclt by nuiuy iui;iinis dc-vicos. It jilToixls one of tho intorostinij:cases where uiuH)nsiious protective ctdor-ation is combined with cousciinis i-n-otei--tive atti(nd(>s. When Iriiihtcned. Dr. KisluM- says, it rises up,draws the
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