Hendrickson 1950 Journal Aug. 27 Upper Covington Flat, Riverside Co., Calif. In about the center of the Upper Flat I saw what definitely was a bluebird (closer ident. not practicable), and shot at it, hurting but not stopping it. The distance was considerable, but it may have been a female Mexican Bluebird. At 7:40 A.M. reached W. rim of Upper Covington Fl. flat; off the W. rim the terrain drops off rather rapidly in hilly country descending to the Coachella Valley. Pipistrelles were flying on the W. side of the rim (largely still in shade). At 8:00 A.M. the shade temp. on the W. rim was 29.2°; a Cnemidophorus taken at this time had a cloacal temp. of 38.4°c., the sunny soil on which it was sitting was 40.1°c. Saw more gopher mounds and badger workings upon returning across Upper Covington Flat by a different route. The bunch grass on the flat is in clumps 8"-12" high, about 3'-4' apart. Followed drainage out of the flat and down canyon mentioned earlier. Willow were found in the canyon bottom near its origin from the flat.