I know some people say to worm periodically, and others never do. I haven't wormed my chickens ever, but i've thought about the worming issue, and i'm wondering if i could kind of do an up-close spot check when i butcher. I'm butchering a few roosters this weekend, who have been with the flock for their whole lives, so i would expect that their worm load would be similar to the girls. But i don't know how to tell. Should i disect their intestines? Do you know?