Well, Snotspout's whole story is a lame bouncy, of course, especially the business of the "bird farm", with pheasants and cardinals. But there's a grain of truth. Before moving to red state hell, I used to shoot a lot of crows while normal hunting seasons were closed.
We used owl decoys, which will drive crows into a frenzy. They would ignore 12-gauge shotguns going off to dive bomb the owl. But you really hit the jackpot if you knocked down a couple of crows that weren't killed. With an owl up on a high stake, and two or three crippled crows flopping around on the ground, every crow within a mile would zero in on us. If we were well hidden, and the flopping crows cooperated, you could easily shoot a box of ammunition before the frenzy died down, and then even more crows would come straggling in from even farther away.
Some days were a washout, not a shot, but when things worked just right it was amazing.