This file displays the distribution and average seasonal abundance of eared grebes at the South Bay salt ponds. Birds were identified and counted monthly from January 2003 through August 2005 within 3 hours of high tide. Data presented herein are average monthly counts per season: winter (December-February), spring (March-May), summer (June-August), and fall (September-November). We assigned species to foraging guilds, groups of species with similar habitat requirements. These included: 1) dabbling ducks (e.g. northern shovelers Anas clypeata); 2) diving ducks (e.g. ruddy ducks Oxyura jaimaicensis); 3) eared grebes (e.g. Podiceps nigricollis); 4) piscivores (e.g. double-crested cormorants Phalacrocorax auritis); 5) gulls (e.g. ring-billed gulls Larus delawarensis); 6) herons and egrets (e.g. great egrets Ardea alba); 7) medium shorebirds (e.g. marbled godwits Limosa fedoa); 8) phalaropes - (e.g. Wilson's phalaropes Phalaropus tricolor); and 9) small shorebirds (e.g. western sandpipers Calidris mauri). The eared grebe guild does not include other species of grebes.