I had wondered about that with the netting. I don’t want my chickens attacked by owls or hawks, but I don’t want any of those raptors entangled in netting either.
Not to say it's impossible, but I think you're unlikely to find raptors tangled in netting. They should be able to see it even if they make an attempt to get in. Hubby saw a hawk divebomb towards the run and it peeled off when it saw the netting at the last moment.
Also assuming you install it so there's not too much slack, they'd most likely bounce off of it rather than get tangled.