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The primary call is an accelerating series of short whistles at an increasing tempo or a short then long trill falling slightly at end. Other calls: barking and chuckling, similar to the eastern screech owl. [6] They also make a high pitched screech. The two primary songs for the Western Screech Owl are the bounce and double trill.
A screech owl fossil from the Late Pliocene of Kansas [4] (which is almost identical to eastern and western screech owls) indicates a longstanding presence of these birds in the Americas, while coeval scops owl fossils very similar to the Eurasian scops owl have been found at S'Onix on Majorca. [5]
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Bare-shanked screech owl: Megascops clarkii (Kelso, L & Kelso, EH, 1935) 208 White-throated screech owl: Megascops albogularis (Cassin, 1849) 209 Tropical screech owl: Megascops choliba (Vieillot, 1817) 210 Bearded screech owl: Megascops barbarus (Sclater, PL & Salvin, 1868) 211 Pacific screech owl: Megascops cooperi (Ridgway, 1878) 212 Western ...
Western screech-owl, Megascops kennicottii (NC) Great horned owl, Bubo virginianus; Snowy owl, Bubo scandiacus (NC) Northern pygmy-owl, Glaucidium gnoma (U) Burrowing owl, Athene cunicularia (R) Barred owl, Strix varia (NC) Great gray owl, Strix nebulosa (U) Long-eared owl, Asio otus (U) Short-eared owl, Asio flammeus (U) Boreal owl, Aegolius ...
Western screech owl; Whiskered screech owl; White-throated screech owl; X. Xingu screech owl This page was last edited on 21 April 2017, at 23:36 (UTC). Text is ...
Western screech-owl, Megascops kennicottii; Eastern screech-owl, Megascops asio; Great horned owl, Bubo virginianus; Snowy owl, Bubo scandiacus; Northern hawk owl, Surnia ulula (A) Northern pygmy-owl, Glaucidium gnoma; Burrowing owl, Athene cunicularia; Barred owl, Strix varia (A) Great gray owl, Strix nebulosa; Long-eared owl, Asio otus
Adults occur in 2 color morphs, in either brown or dark grey plumage. They have a round head with ear tufts, yellow eyes and a yellowish bill. The bird looks very similar to a western screech owl, but has heavier barring on the breast, and is slightly smaller in size. They are 6.3 to 7.9 in and have a wingspan of 17.3 in.