Mayhew 1950. Cliff Swallow 8. April 27 Poleline Bridge, 3 mi. N.E. of Davis, Yolo Co., Calif. nest, the bird grips the bottom edge of the opening with both feet & hangs with its back toward the ground. It appears as though the tail may be used as a brace in some cases. There is a flat base of mud from last year between nests 2-32 & 2-33 on which 2 birds apparently are rebuilding a nest. There is a small layer of fresh mud on the east side of the old mud & which these 2 birds appear to be adding more fresh mud. I stood directly beneath a row of nests that were about 5 feet above my head. The majority of the colony did not like my presence there, but the birds above me didn't seem to mind too much. One bird remained with its head out the door of its nest the entire time I stood there. On 3 occasions a bird from the nest next to that one returned & entered its nest with my head not over 5 feet from the entrance to the nest. As soon as I sat down in the middle of section 1, all was normal again. April 28 Bridge, 4 miles west of Davis, Yolo Co., Calif. Tonight, with the use of fish nets over the ends of the bridge, I was able to catch 60 birds. Of that number, 14 were banded there last year, the remaining 46 were banded at this time. Thus, 23% of the birds caught tonight were returns.