My 6 week--- almost 7 week old chickens seem to be spending a lot of time in the coop during the day; they literally go in there and cuddle together at noon. however, they never go up into the coop at night. I have a coop with an attached run that we will be expanding soon. This evening.. About 6 pm... It was dark and I went out there to put them in the coop. They were huddled in the bottom corner of the coop/run chirping like crazy. It sounded like a stressed chirp. Is this normal? I'm kind of worried.... Any tips would be appreciated. Thanks!