E.V. Miller 1940 General Account Titmouse. In the late afternoon I set out 50 more M. specials for mice, up on a rocky, brush and cactus covered slope. I collected a Dark Bunting, a Linnnet and a lizard (Holbrookia?) while setting the traps. Later I set 10 Schuyler no 1 traps in a nearby field for Cotton Rats. These were set in a runway under some weeds at the edge of a wheat field. There was no signs (grass cuttings) here, however. In the evening I shot 4 bats and found 2 of them - both Tadarida mexicana, 1 ♂, 1 ♀. March 31 Took 7 Peromyscus (boykii?) in mouse traps, 4 ♂, 3 ♀. Took 1 ♂ Sigmodon in a net trap. During the day shot a ♀ Calliope(?) Hummingbird at camp. In the afternoon Benson, Margo, and I went over to the E side of the canyon to inspect a 'bat' cave. The natives spoke of there being a 'few' bats here. The cave was about 15 ft. high and 50 ft. long and had been used as a goat pen. We found no bats. There is another cave farther away, which is supposed to have more bats. We expect to visit it tomorrow. In the evening I went hunting and collected a Sealed Quail ♀ and a Cottontail (⚬?). On the way to the cave I took a Cremidophorus seplineatus. In the evening I shot a ♂ Pipistrellus sp? April 1 Yesterday Benson made known his desire to have some Cittellus variegatus to some natives, and gave two ♀ persons some shells to get squirrels with. The result was that about 21 squirrels were brought in not only by the persons Benson had told but by several