I was also going to recommend bird netting, but then if it gets stuck you’d have to free it. Doesn’t sound like a great idea. Not to mention you’d be in trouble if it gets hurt. What about throwing something like a tomato or a tennis ball at it? It’s hard enough to hurt a but and hopefully scare it, but wouldn’t injure it. Of course you could do firecrackers, but it’d terrify your chicks and the horses(?) in the background.