Retired, no job, not a lot of money, so I like cheap. . . If you can get it up high enough that YOU don't run into it, some of the easiest and cheapest stuff to string that will play Hob with the aerial bandits is nylon monofilament fishing line. You can crisscross a lot of that stuff all over the place and if something tries to fly in, it gets bumped off course and crashes. Of course depending on the thickness, your line might get broken too, but if it doesn't cost much to replace who cares. Our bargain outlets around here always have it cheep cheep cheep. The only reason I'm using heavier cord is to hold up the sections of fruit tree netting. You do have to keep track of monofilament and make sure broken bits don't end up where your birds or any wildlife can eat it by mistake, same thing with it getting into water.
Interesting that when your turkeys pip the chickens come outside. As soon as my chickens (or ducks) hear the turkeys pipping, they are outtathere! Well, like I said, lots and lots of optimistic hawks here, many attempts at bantamcide. Back when I had the "big" farm, I twice had to catch Cooper's inside my barn where they thought they would set up winter quarters and have chicken dinner every other day. I've had lots of all kinds of bird all my long life, but the raptors have been the dumbest I've been around. Both sliding barn doors open and two of us trying to shoo a hawk back outside, and no go. In both cases I finally had my neighbor shut the doors and chase the hawk up into the loft where I was waiting, and threw my coat over the bird then caught it around the legs with my hands so it couldn't nail me. These were that year's young adolescents; in each case I put the bird in a cat carrier and took it on a loooooong drive. But you have to go over 50 miles, and 100 would be extreme, or they'll come right back. This only works with the young ones, if you are in an adult's territory, you could ship them to from Michigan to Texas and chances are they'd migrate back next spring. Eagles. . . I don't know as I would mess with something that big.