The Ruffed Grouse became the official state game bird of Pennsylvania in 1931. Several states have an official bird and an official game bird; Pennsylvania has only the game bird. The Ruffed Grouse is a year-round resident more... throughout the entire state of Pennsylvania. Ruffed Grouse are known for their drumming courtship display. This design from Birdorable features a cute cartoon Ruffed Grouse standing before the flag of Pennsylvania.