Some of em are just tubes that you blow in...they're kinda airy sounding and not real throaty. Doing the "who cooks for you" should work, but it's not real loud.

The owl call I got has a reed in it that vibrates. It's a bit louder...and I do the same thing with it. I guess whether it sounds good to us or not, it'll sound good enough to the turkey, to get it to gobble.