I loose a lot of turkeys to GH owl. Size doesn't matter. My breeding tom was snached off a limb Dec 1st a few years ago. The only talon marks were on his neck and a bit of neck was eaten, about the size of my thumb. His shoulder was broken where he hit the ground.Speaking of predators, my 8 week old poults are still in an 8' x 12' coop at night and allowed outside in a covered run during the day. I am planning on pasturing them sometime around Labor Day. But I am a little concerned because we have the usual predators in Southside Virginia including coyotes, foxes, raccoons, skunks, opossums and weasels. And just last week, when I went out to shut the coop at dark, there was what I believe to be a Great Horned owl sitting up in a tree about 20 feet from their enclosure. I actually worry the most about it due to its sheer size.
8 yr old hen got it this spring.. they ate/took the whole left side. Leg quarter cut off at the joint better than I can do.
If they ever have a season on raptors I would take advantage of it, until then I'll share.