I am glad I did not heat the coop over the winter because the birds are accustomed to the weather now and aren't phased by cold temps. They also laid all winter without any additional light source!
I will sum up a long story to pass along some good information...due to a pit bull attack -(only feathers were lost) the girls were locked up a lot while we attempted to catch the dogs in a live trap. During this Roxanne took her frustrations out on Frenchy plucking her head bald.
First, I locked her in a large pet carrier, but there wasn't enough room to lay. I went soft and let her out after a day and that night she laid two eggs at once, one of which was deformed and gooey.
Then we tried to keep her in a fenced in area in our backyard but she flew over the 6 foot enclosure. So, I've given up for the moment. If she gets worse I will buy a bigger dog cage and confine her.
She's been given a good talking to and for better or worse I'm letting them all out despite the lack of fence and lurking dogs...