Wednesday, May 8, 2013

Pied-billed Grebe

This Pied-billed Grebe, a species about which I have previously posted, preened, as the species often does, while on the water, in this case Lake Byllesby in Goodhue Co., Minnesota. Preening often consists of oiling the feathers. The bill and head are used to rub oil on their feathers. The oil is collected from their uropygial gland, an oil gland located near the dorsal base of their tail.

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