Summary

Description

During breeding season, cliff swallows are widely distributed throughout Alaska and North America south to Mexico, and they are locally common in western and southwestern Alaska Kessel and Gibson 1978. In western Alaska, cliff swallows occur in colonies of 6100 nests on the Seward Peninsula east of 166 west longitude Kessel 1989. In the, Kilbuck and Ahklun Mountains of southwestern Alaska, colonies of 10500 pairs occur along rivers and streams above treeline circa 240 m asl, and small colonies occur infrequently at lower elevations Petersen et al. In prep. Other reported colony sites in western Alaska include Unalakleet, St. Michael, Russian Mission, Holy Cross, and along the Andreafsky River Bent 1963, Kessel and Gibson 1978, B. J. McCaffery Pers comm. On the YukonKuskokwim Delta, 3 colonies totaling