I have a covered run and a rooster. Both are wonderful for predators.
Hawks are a prime predator no matter how much predator proofing you try to do. The only solution is cover. Chicks are especially vulnerable since they are easily grabbed and carried off. So lucky you were there and tragedy was foiled!
So my parents said that because we will be moving and we will most likely have to give my chicks away they don't want to make a chicken tractor or a hoop coop my mom only wants to get 3 fake owls but I did tell her about the PVC run that I and my dad can make and she said maybe and I have lots of chicken wire to make it as well and I can't have chickens where we live so there's no way I can get a rooster, lolYay for the good news! We have the occasional hawk too, but we have cover. Can you make a chicken tractor for them to graze in? If you look up plans online it would give you ideas and you can price out parts. I have seen them made out of PVC with medium bird netting and half covered with a tarp for shelter. Daytime use only though.