The glaucous-winged gull (Larus glaucescens) is the most common gull in the north Pacific (Bent 1921, Murie 1959). It is also one of the most abundant permanent residents on Amchitka (Williamson & White 1974). Between 1967 and 1973 studies and censuses of the avifauna of Amchitka were sponsored by the Atomic Energy Commission and counts of glaucous-winged gull abundance were generated (White et al 1977). During the 1980 summer season a permanent transect was established within the nesting area of a gull colony. This was an attempt to sample a representative portion of the total glaucous-winged gull population of Amchitka. By compiling data on nesting success and population size over several years, trends affecting the gulls were to be determined.