A patch of color on some ducks formed by a rectangular wing panel on the trailing edge.
Photo at: All About Birds
« Mallard | Main | Ring-billed Gull »
07/10/2012
Bird-nerd-word of the day: Speculum [SPEK-yuh-luhm]
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« Mallard | Main | Ring-billed Gull »
A patch of color on some ducks formed by a rectangular wing panel on the trailing edge.
Photo at: All About Birds
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