Registro del tecolote afilador (Aegolius acadicus) en las montañas y valles del occidente de Oaxaca, México
Distribution, pine-oak forest, Strigidae
Report of the Northern Saw-whet Owl (Aegolius acadicus) in the mountains and valleys of western Oaxaca, Mexico. Abstract We mist netted an adult of the Northern Saw-whet Owl (Aegolius acadicus) in San Pedro Totomachapam, municipality of Zimatlán de Álvarez, Oaxaca, in December 2010. A photograph documents the first record in the physiographic subprovince Mountains and Valleys of Western Oaxaca, which expands the species’ know range by 60 km to the south. The continuous pine-oak forests in this region, known to be the main vegetation type of the habitat of the Northern Saw-whet Owl, suggests that this rare species may maintain populations farther south of the known distribution maps available in the literature.