As a new chicken owner, I'm reading all I can about keeping my 12 week old RIRs as healthy as possible. Recently, I've been reviewing a lot of past posts about worming. This is what I've gathered: 1. Worm on a regular basis, anywhere from every 6 months to once a year. 2. Use wazine first. Do not eat eggs for 2 weeks (not a problem with 12 week olds). 3. In 2 weeks, follow up with Ivermectin. Do not eat eggs for 2 weeks. Here are my questions. Is 12 weeks too young for worming? How do I know if I even need to worm? My chickens free range about an hour or 2 every day. There are a lot of wild birds handing around the feeders, and of course the chickens gather under the feeders to scratch for dropped bird seeds. So they are exposed to wild bird droppings. Does anyone have any recommendations?