I recently purchased a fake owl with a bobble head. First day I put him out, the chickens freaked out and ran in terror! Lol Do they really keep the hawks away? I move mine around. Wondering if maybe I should use two. My yard is about 1/4 acre.
Maybe you'll have better luck with them than I did, but the hawks didn't really seem impressed by them (I used three). The fishing line strung with pieces of reflective mylar seemed more helpful - no additional attacks occurred in the areas where I put the line/tape; in fact, I actually saw a hawk sitting in a tree looking down at a couple of silly juvenile chickens that were right under the tree, but it didn't attack them. I think it could see the line strung in that area (a few feet off the ground) and didn't want to chance it.