Sunday, September 8, 2019

Common Merganser

In the Nisqually National Wildlife Refuge on 22 August 2019, Erika and I watched a large flock of Common Mergansers feed cooperatively. These ducks swam in a loose line, with birds in the rear splashing the water as they tumbled forward and leap-frogged the birds in the front. The whole scene was chaotic, but the flock slowly moved forward, driving their prey ahead of them. Adding to the tulmult, several gulls scavenged overhead, stealing fish from the merganser flock.

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