I have read and heard that chickens have worms inherently and you need to worm them periodically to keep them under control. I have 9 and 8 week old chickens and have seen no sign of worms (don't know if I would at this point) but I wanted to get an idea if you need to worm chickens periodically weather or not you see any signs or if you wait to see signs and if you wait to see signs, what are those signs? I know in dogs and cats Tape Worms are the only ones that you would really see unless the problem got unbelieveably bad. Most of the time you have to do a fecal ova test. I would appreciate you input before I have the need. Thank you.