One of our cuties, just started laying eggs...3 so far... we have a tarp in the barn and she's been laying there. How do I get her to lay in the coop? The coop houses 9 hens and it has a heat lamp, food and water. It's snowy outside...so they don't like leaving. She leaves just to lay an egg...she walks in the snow to get to the tarp. Thanks!!!!