_Specimens examined._--Total, 6: Head of Prater Canyon, MV
7876/507; Chickaree Draw, Prater Canyon, MV 7843/507, 7844/507;
Headquarters Area, MV 7888/507; Ruins Road 1/2 mi. NE of Cliff
Palace, MV 7893/507; and Spruce Tree House, 4334 in Denver Museum.
Specimen number 7893/507 had 360 Purshia seeds in its cheek-pouches
according to a note on the label. On July 18, 1960, I found a young male
rock squirrel dead on the road a mile north of headquarters that had 234
pinyon seeds in its cheek-pouches. Young, recorded as "half-grown," have
been observed in May and July. The first appearance may be as early as
January. In 1950, D. Watson thought that they did not hibernate, except
for a few days when the weather was stormy. I observed a rock squirrel
in August in the public campground at Park Headquarters sitting on its
haunches on a branch of a juniper some twelve feet from the ground and
eating an object held in its forefeet. The rock squirrel ranges
throughout the Park in all habitats.