Roughed grouse--commonly called partridge when I lived in NY north country in the 1970s. It does seem like now there's fewer of them than back then. But at my camp property in St. Lawrence County twice last June I encountered a hen and brood--and yes, like Chipper1 says, it's a small circus. Numerous invisible things (like 8--10) ruffle the leaves and disappear, while momma does a dance like "Oh, I'm injured, having trouble getting about, with this wing dragging the ground and all." Was glad to see them.
I loved to shoot ducks back in the day ('70s), but was never quick enough on the draw to get a shot off at a grouse. Those things would explode from the ground and be gone while I was still thinking about raising my 12 ga.
One time while out in the woods under a full moon in fall after the leaves were off, I saw a grouse roosting on a tree limb. Its profile was clear to see in the moonlight. Which inspired me. Sometime later I was walking home in the woods from my brother's place, under a full moon, and saw the silhouette of a partridge roosting in a tree. Cool--dinner coming. I chambered a shell, raised up, and shot it at easy range (7 1/2 duck loads). Then looked to see the damn bird still in place. Loaded and shot once more. I think I shot three times, and kept peering at that stupid bird unmoved.
Couldn't stand it, and walked back to that location in the woods the next day. I saw the tent caterpillar nest that I'd been shooting through.