I have 4, 5 week old babies that are as healthy and happy as can be. Well, today I took them outside since it was so beautiful and had them in a big fenced/covered pen right next to me while I gardened. They loved it! Well, about an hour ago they went back inside and in to the brooder box. Ever since they won't stop crying! It's that loud, "I'm not happy!" peep that they do. NOTHING was changed in the brooder or that area! So I have no idea why they are upset. The only thing I can think of is they liked being outside and aren't happy with being back in the brooder ( which is huge by the way: 4x6 ft.). Anything else it could be? Do I just let them cry themselves to sleep? Thanks for the help!