Northern Prairie Wildlife Research Center
Human activity did have a strong effect on lesser scaup (Aythya affinis) feeding. Areas that were heavily hunted were not subject to lesser scaup feeding during the hunting season. During the fall and spring many of the feeding areas were not utilized when fishing and boating activities were going on. Even during mid-winter when a comparatively balmy Saturday or Sunday encouraged human activity along the shore, the lesser scaup would not be present in their normal feeding areas.