Red-breasted Nuthatch (Sitta canadensis) Science Article 2
abstract
On 15 September 1990 we collected a Red-breasted Nuthatch (Sitta canadensis) at Rancho Casa Verde. western slope of the Sierra Jubrez, east of Ensenada
GORGONIO RUIZ-CAMPOS and LORENZO QUINTANA-BARRIOS, Western Birds 22:189-190, 1991