In Alaska, large, concentrations of surf scoters can be observed during the early spring, feeding on easily obtained roe deposited by spawning herring. Consequently, the number of young birds entering the population each year is relatively low and highly variable. On the other hand, adult sea ducks tend to live longer than dabbling ducks. This life history strategy of high adult survival and low annual productivity is better suited to species that live in the relatively stable environment of the northern marine ecosystem. Compared to other ducks, we know very little about sea ducks, and among the sea ducks we know the least about the surf scoter.
Surf scoters are virtually unstudied, particularly during the breeding season.
The lack of information about surf scoters, and sea ducks in general, makes it difficult to determine the cause for their recent decline in numbers. Most sea duck species have declined over the last ten years. Researchers and managers have recognized that a lot has to be learned about these mysterious birds and have focused attention on understanding their ecological requirements.