Not chickens, but....
I was visiting a friend in Florida, and her next door neighbor had chickens. While I was chatting her up about her setup and whatnot, I heard a RATATATATAT! Living in New Orleans, I spook when I hear loud gunshot-like noises. The neighbor laughed at my distress, and told me what it was.
She's got a bird feeder hanging on her rear porch. I don't even remember how many different kinds of birds show up, but it's a lot. One of which is a woodpecker. When the woodpecker gets crowded out of the birdfeeder, he hops up onto her gutter and makes a big loud RATATATATATAT! to scare all the other birds away, so he's the only one left with the food.
Now, all y'all who've mentioned clicker-trained chickens running agility courses have a serious responsibility to post some links, y'herd?