R.K. Selander, 1952 Bubo virginianus July 22 35 mi. S El Entonque, 5000 ft., Durango, Mexico. At about 7:00 A.M. I flushed two horned owls from a ledge of a sheer cliff along the river bed (dry). Both birds were perched on this ledge, perhaps 75 feet above the river bed. Both flew about 50 yds down the river [illegible] and perched together on another ledge. I was able to approach to within 35 yds. or so, and obtained one with a half-load. The other bird flushed again when I fired and flew off over a rise above the cliff. The specimen collected shows indications of molt.