posted November 12th, 2009; last edited November 18th, 2010 –– David Sibley

Ruffed Grouse  Bonasa umbellus

Variation in Ruffed Grouse tail patterns

“…a Ruffed Grouse with a solid tail band is almost certainly a male; one with a broken tail band is probably a female but could also be a male. The strutting display behavior can be performed by both sexes, but only females tend the young.”

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