Lesser Scaup ( Aythya affinis ) Parasitic Egg Laying in the Redhead (Aythya americana) and Other North American Anatidae Foraging and Size Selection of Mussels by the Tufted Duck, Aythya fuligula Swimming and diving in tufted ducks, Aythya fuligula, with particular reference to heart rate and gas exchange Amphipods, land-use impacts, and lesser scaup ( Aythya affinis ) distribution in Saskatchewan wetlands Lipid Reserves of Lesser Scaup (Aythya affinis) Migrating across a Large Landscape Are Consistent with the "Spring Condition"Hypoth... Diets of Lesser Scaup Breeding in Manitoba (Dieta de Individuos de Aythya Affinis que se Están Reproduciendo) Nutrient Reserves of Lesser Scaup (Aythya affinis) during Spring Migration in the Mississippi Flyway: A Test of the Spring Condition... Effects of variation in egg size and hatching date on survival of Lesser Scaup Aythya affinis ducklings Effects of body size, body fat, and change in pressure with depth on buoyancy and costs of diving in ducks (Aythya spp.)
