Cliff Swallow 14. Mayhew 1950 May 16 Poleline Bridge, 3 mi. N.E. of Davis, Yolo Co., Calif. Nests 1-1, 1-2, + 1-3 have fallen off, as has 2-11. The nest between 2-32 + 2-33 (2-105) has now been completed. It was still unfinished May 10th when I was banding under this bridge. The remains of several eggs + one young bird were seen beneath the nests on the south side of section 2. The young bird hadn't been dead very long because decay had not yet set in. It was completely naked. May 25 Bridge, 4 miles west of Davis, Yolo Co., Calif. Tonight we caught 97 birds under this bridge with the use of the fish nets enclosing the ends of the bridge. Of this number, 40 were adults, 37 were young of the year that have just started to fly. The throat + forehead of these young are dark brown, speckled with white in the more mature youngsters. Thus, 77 birds were newly banded; the remainder were already banded (20 birds). May 26 Poleline Bridge, 3 mi. N.E. of Davis, Yolo Co., Calif. Tonight 20 birds were caught, 5 of which had already been banded. All the birds were adults. The results were as follows: repeats returns 49-25645 - sec. 2. 44-54403 - sec. 2 49-25679 - 2-53 49-25634 - sec. 2 49-25671 - sec. 2