Waterfowl Of North America

"Compendium of data...for all of the nearly sixty species of ducks, geese, and swans known to breed in North America. For each species the distribution (with range maps for all breeding species), weights and measurements, information on identification in the hand and in the field, criteria for determining age and sex, and North American subspecies are given. Each species description also includes detailed accounts of preferred habitat, food, ecology, migratory movements, sociality, age at maturity, nest location, clutch size, incubation and fledging periods, pairing and flocking behavior, and copulatory, nesting, brooding, and postbreeding behavior." --Dust jacket.