I only had to deal with a broody once, I tried putting a wrapped ice pack under her (didn't stop her) so I put her in a cat carrier. They were indoors so the cold wasn't a problem, I just lined it with newspaper (didn't want her to get too comfy) clipped a water dish on the wire front and put food in for her. She got bored after about 3 days at which point I put her back with the others and she was fine. It did take a week or so more for her to start laying again though.