Some pretty funny stories. This may not seem funny to you, but it sure was to me at the time.
Many years ago when I was a teenager, my cousin and I were out with our .22's basically after whatever we could find to pop (red squirrels, starlings, etc). We just came out of a woodlot and saw in the next woodlot hundreds of crows in the trees - some flying around, most sitting. It was too far away to shoot, and too much open ground between us to cover without being seen.
We decided to see if we could call them over - but had no calls. So we took pieces of grass with wide leaves, put them between our thumbs held together pointing upwards, and blew on them. They made somefunny screeching and squeaking sounds that weren't much like crow caws, but we kept trying, beginning to laugh at our feeble attempts.
Suddenly, the whole bunch of them took off and came flying right over to us and began landing in the trees around us. We couldn't believe it, and were laughing so hard we never did get off a shot before they figured out they'd been tricked and took off!
You would have had to have been there.

IM jaybe