For hunting pheasants, chukars, quail, huns, especially with a dog, I never shoot birds on the ground. But to me, grouse are different. Even if I have a dog with me I will shoot one out of a tree. With grouse you don't get much of a chance. If you wait for the dog to point a bird before you ever take a shot, you might not ever get to shoot at a bird. If I shoot one out of a tree the dog at least gets the chance to retrieve a bird.