Until the differences between Long-eared Asio otus and Short-eared Owls A. flammeus in the field were analysed by A. H. Davis and Robin Prytherch [Brit. Birds 69: 281-287, plate 49), flight identification of these species was seldom attempted, or a day-flying Asio owl was assumed to be a Short-eared. Now, however, the owl in plate 108 (page 390, and repeated here), photographed by G. StJ. Hollis i


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