Oh my gosh mine use to fly up on the top of their coops the house roof is way too steep thank goodness but I'd have to get the hose turn the nozzle so it was on blast to get them down.Just curious, but why do you want them to fly? I go out of my way to trim flight feathers so they don't. Or else I find them on the vehicles, on the roof, etc.
I find mine only fly their first year, anyhow, and only the females.