R.B. Hamilton 1967 Journal Rio Chamaya, 35 km SE of San Felipe, Dept. of Cajamarca, Peru, elevation 2500 ft. August 20 a Pale-legged Hornero (Furnarius leucopus). Carl set out traps along the fence rows. After supper Ray, Fred and I went hunting for amphib- iens and reptiles. We collected several large toads but soon the mosquitos got too much for us and we returned to camp. I slept at a fork between the streams in order to check the net. I caught one bat while we were eating supper. The mosquitos were rather annoying and I did not sleep very well. Unfortunately, I did not catch any bats. Several hit the net but none stayed in. August 21 I arose at 06:00. Carl checked his traps and found he had caught many small rhodents. He only put up a couple of Oryzomys sp. however. After breakfast I went hunting. I first went through a pasture where I saw many seed-eaters and shot a Yellow-tailed Oriole (Icterus mesomelas) but I was unable to find it in the thick vegetation. I tried to limit my hunting to species not in our collection and passed up opportunity of collecting many common birds. I went through a grove of large tropical trees (I do not know what kind. There were many birds around but they were mostly at the tops of trees and I was unable to get a shot at them or