28 Journal Borell 1964 Ojo la suma, Chihuahua, May 5 200 ft May 12 Returned from Chihauhua at 5 P. m. White Cr. Sparrows are as Numerous around camp as ever Hermit Thrush - 1 Waterthrush - 1 collected. Audubon Warbler - several ? May 13 Cool windy day. 56° F at 7 a.m. Took a two mile hike through the marsh ad mesquite. Biologically it has been a quiet day. Solitary Sandpiper - 1 Chipping Sparrow - 1 Brewer Sparrow - 8 Blackheaded Grosbeak were common about our feeding area (4 or 5 in sight most of the time on May 10 and 11. To-day we have seen more Blue grosbeak - 1 Inca Dove 1 & cooing Western Tanager - 6 Townsend Warbler 1 Audubon warbler - 4 ? in sight at one time - this is a definite increase.