Love to know who has the RIR in CO. I got 10 of my chickens from Estes Hatchery via the feed store. Min order is 250, great website and you can get less if you pick up yourself. Not a bad place to visit lots of cool cabins or historic places to stay and hike etc...then get your new chickies and head home.
I worry about poisoning the mice. If a mouse is dying the chickens will still eat him and then the poison will get into the chickens. I know, i'm a freik about some things. My chickens hunt mice. I saw the roos in the coop the other day stalking one. They dont get to free range so they rally for a mouse hunt like its the super bowl. I swear the hens have little jerseys with their favorite players names on the back....."mater" "mcqueen" and "mouse". lol.
LOL Nice mental image

I *think* most modern mouse poisons are not poisonous to the secondary consumer, but never hurts to carefully read labels. Will have to find that ad and post a link for the CO Reds.