This data release contains five spreadsheets of information from aerial surveys of the Indigirka River Delta, Russia, in June of 1993 and 1994, data on habitats where nests of Spectacled Eiders (Somateria fischeri) and other species of waterfowl were observed from 1993 to 1995, and genotypic data from feathers collected from eider nests to determine inter-annual rates of return by nesting eiders. Data collected in 1993 are not digital but are available upon request from the USGS Alaska Science Center.