Nope...blue grouse are supposed to have that.(at least the males I think). I believe it's used for vocalization. Here's a better angle of the area your talking about.
TPlank, that photo is awesome. Looks like he's standing on matching colored limestone. My wife promised me the greenlight on getting a chance to hunt them in the next couple years. Montana here I come for a little fly fishing and grouse chasing.
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