16,501 vertebrate specimens were recovered from 31 units on the Elmore Ranch Site, Imperial County, California. The majority of identifiable specimens (1675) were from American Coot (Fulica americana). Also included were Lesser Scaup, Grebes and Canvasback. The species identified were mostly either divers or dip feeders that are unable to take off vertically from the water indicating a likelihood of capture by nets. Coot sex ratio deviated significantly from the expected 0.50 proportion of females common to monogamous birds. The difference could relate to different feeding schedules during the breeding season, which would not only indicate the season of capture, but also the time of day.