Abstract.—Birds are known to modify their foraging behavior in relation to food availability.
Once understood, these relationships can be used to draw inferences about relative food
availability and habitat quality. We measured foraging behavior of Surf Scoters(Melanitta perspicillata)
and White-winged Scoters (M. fusca) feeding on clams during winter in the Strait of Georgia,
British Columbia, to evaluate the relative quality of the foraging landscape for wintering scoters.