Timberdoodles (woodcock) are fun and exciting with a modern gun- very difficult too, in a tight damp bush. That was their domain back East in South Western Ontario, I had discovered them while Taylor was off learning to be a Mountie and on his first vacation home, after 2 years away, I took him out woodcock hunting. The first one to flush was in sight for about 2 seconds and 8 feet before disappearing seemling to rocochete through the trees. He shoulted "What the h--l was that?" I asked Why didn't you shoot it - that's a woodcock. Taylor said he hadn't even really seen it before it disppeared - tough flint shooting at best!
There, it's almost impossible with a modern gun, but open chokes, light handling and learning to hip shoot does work - there, it did for me.
Grouse shootng is a different in the Eastern bush - flushing wild at about 25 to 35 yards without a dog - a stong modified choke & 7/8oz. to 1oz. #6's was needed for the 20 bore. 1st sight of them was probably 35 to 40 yards. Here, round ball (or bullets) works fine for head shooting sitting birds.
I hunted grouse back in Ontario for 8 or 9 years and never saw one sitting. When Taylor wrote and said he'd been shooting them with a rifle, I almost called him a fabricator (or a word to that effect). Here in BC, I've shot as many as 15 Ruffie's in a day, all head shots with modern rifles.
The most collected with a ML in a day was 6. I also blew some up with a .58 Hawken using 200gr. of 2F while hunting with Taylor - feathers and little chunks of meat in the bushes, but thats another story.