Tens of thousands of migrating lesser scaup ducks have arrived on Mississippi River Pool 19. Located at Keokuk, Pool 19 is the spring migration’s most important stopover. Swarming northward from ...
The lesser and greater scaup are better known as bluebills. As the nickname implies, both subspecies have blue bills, and the two birds are very difficult to differentiate. Each is part of the diving ...
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