I’ve had yard chickens that did pretty good. My neighbor raised peacocks and those suckers were scary, they couldn’t turn very well. You just had to duck!
How high did they get? Flying across the yard at a height of 3 to 5 ft ain’t gonna cut it.
When you start seeing flocks of Chickens at 10,000 ft heading south - let me know and I’ll microwave up a big batch of crow.