One thing that we found is that the larger size of tin snips with blades about 4 inches long work great even with larger roosters. They come a lot sharper than the loppers and are easier to sharpen when they start dulling. I did 11 birds using them the last time and for each it took one snip of the tin snips to remove the head and I held them over the bucket while they drained out then we finished cleaning them. All in all we got started about 9:30 to 10:00 and were done completely by 1 or 2 and since we did everything over large trash bins with bags in them clean up was a breeze we just needed to combine the trash bags into one and we were done. It was all taken down to the burn pile and burned since it's way too cold to dig and bury them this time of year