I built this new feeder and hung it on the outside of the coop but the hens are a'scared of it. I even put corn in it to tempt them, but no luck. I'm going to poke it through the wire so it's on the inside, but before I do that I want to make sure they are going to be OK with it. I noticed he other feeders like this are made of white pipe. Does the color have something to do with it? Do they think it's a snake?