My little chicks are not so little anymore. I may sound like an idiot, but I know they have to stay for one month or until feathers grow. But what do the feathers look like? My chicks are still balding and are 3 1/2 weeks old. How do I know if they are ready? They are starting to outgrow their brooder and I don't have a bigger one and it is too cold for them to go outside. What do I do?