Hi Snit - a Sooty Grouse (sorry...edited post above). They are type of Blue Grouse (specific sub-species) that live at higher elevations in a small band that runs along the PNW Coast only. Dusky Grouse are the other type of Blue Grouse that are MUCH more common.

Sooty's are a dark slate blue gray with a very specific tail pattern and they're BIG for Grouse. They have much darker and more flavorful meat than say a Ruffed Grouse and are a solid 1x larger in size. Very cool feathers to add to my tying kit.

I'll try to post a cool pic I got....