The last two years were excellent for grouse in my Region 2 spots. The year prior to that, as well as this year, they seem to be few and far between. It was pretty wet throughout the spring and early summer which might have something to do with it... either that or it's just a normal cycle. I know of one pocket with a half dozen or so, but it's in one of my deer spots so they get a pass, at least until I get frusterated.
Darn shame though as I bought a new 12ga just so I could hunt BT's and grouse with the same gun.