they do respond to calls, but don't call to them like you do in the spring. Turkeys are naturally social animals so if they hear another bird a lot of times they will come to check things out. I would stick with feeding calls (purrs and clucks) and maybe a few lonesome yelps here and there (to sound like a bird who is looking for company) or better yet a kee kee run (to sound like a lost, juvinile bird). good luck!