So by WDFW's definition, they are not a "game bird" but a "forest grouse". OK
I'm still not sure about the maximum three shot rule. I'm pretty sure it still applies but I could be wrong.
Incorrect.
WAC 232-12-044 (1) states that blue, spruce, and ruffed grouse ARE
game birds AND are also considered forest grouse.
WAC 232-12-047 (2) states it is unlawful to hunt
game birds with a shotgun capable of holding more than three shells.