Erickson 1934 7 mi. east of Papago Well. Gila Bend, 72 ft, Maricopa Co., Ariz. 21 In afternoon, set 42 medium sized and 12 rat on west slope of same hill as last night and on west and east side of next three peaks in this small ridge; also set 4 medium sized traps on mesa. Saw pair of Ravens north of hill, Feb. 5. Took 1 Meriones algida and 5 Peromyscus eremicus in traps on hill; one Dipodomys merriami on mesa, trap dragged into hole and rat eaten except for head. Pair of Rock Wrens seen on east slope again; saw jack Rabbit; two unidentified bird in distance flying over creoste and perching in it twice; single Gambel Sparrow near camp tame, most of day coming to within a few feet of us. Feb. 6. Had two live Dipodomys merriami in bird trap left open over night; released them. Gambel Sparrow still about camp. Moved from east of Papago Well to Gila Bend via Bates Well and Ajo. Spent first part of afternoon north of town near river, mostly flood lands; little evidence of gophers and all of it old. Went to alfalfa field 11 mi. west of town on Yuma highway and made 7 settings. Gophers seemed to be limited to edges of field where they could escape being flooded out at times of irrigation. Meadowlarks common in fields. Brewer Blackbirds flying high in flocks from southwest to northeast; one small flock stopped briefly on wires along railroad track.