Literature references to the food habits of the barn owl (Tyto alba pratincola) in eastern, mid-western and Pacific regions of the United States are many, but since no records of small mammals utilized by this bird in the Rocky Mountain region were noted, the following may be of interest. In the autumn of 1953, 275 owl pellets were collected from an excavation four miles southwest of Fort Collins, Larimer County, Colorado. Several owl burrows were found in the vertical walls of this pit. The number of owls and length of time during which these burrows had been inhabited is not known, but two birds were seen simultaneously and the carcass of a third was found.