We have two species of Scaup in North
America, but they look very similar, and
90% of them are Lesser Scaup. Unlike the Teal, featured last week, Scaup are divers, feeding on crustaceans (especially amphipods), mollusks, insects, minnows, and some plant material.
They are long-time favorites of duck hunters (despite their anchovy-like flavor which I enjoy), with historically abundant populations along the Atlantic coast during migration, but their population has been unaccountably declining over the past decade. You can see their flocks resting in fresh or salt water, or wheeling in the sky like schools of fish, between October and February, with most birds wintering in the southern US and Central America. Their main breeding grounds are the northern boreal forests.
More on scaup here.
Does hunting have a measurable effect on duck populations? No. As with most critters, habitat is everything. We will bag a few bluebills next week, in Canada. And eat them, too, cooked rare. Never cook duck anything more than rare. And never with anything with an orange flavor - overpowers the duck. Cooked pears or figs are far better with duck.