I think I have all raptors known to man up here....
I have lost a couple of full size Muscovy ducks to raptors.
The only times that I haven't lost birds to raptors (that were actively trying to kill my flock) is when the raptor got caught in the overhead netting..and once the raptor (a bald eagle) had to swoop into the one hole in the otherwise covered duck pen...so couldn't do the killing dive.
My younger Muscovy drake attacked the Eagle, while the older drake herded the rest of the flock into the coop.
The younger drake managed to upset the eagle enough so that the eagle flew off... but the drake had his entire chest torn wide open.
Oh, some years back I had the chickens free ranging while I gardened, and I saw an eagle way up in the sky planning a dive. I started running towards the chickens yelling like a banshee, and I was pretty close... the chickens started running to the coop, but the eagle still made his dive. I guess I distracted him enough though, because the full grown chicken he landed on didn't have her back snapped, just deep body cavity puncture wounds and a big flap of chest skin ripped open. The eagle didn't fly off until I was almost close enough to grab him...he wanted to get a bite first.
My point? Everything up here eats chicken.... I can NEVER have them without cover over their heads, unless I am within ten feet of them.
Even the ducks, I need to make sure that their wings stay clipped so that they stay under the cover that I have for them. The second one of those big Muscovy ducks perches on a fence post..it is snapped up. Muscovy are strong, and the males fight pretty impressively..but fast they are not.
The only thing I have been able to fully free range here without loss...is geese. And I didn't let them loose until they were close to full size, and they were in a flock of six. I still locked them up tight at night...but they did great during the day.