Good evening, everyone. I'm having a concern that I hope someone can help me with. I released a female gray squirrel in October of last year, named Nugget. She lives in my backyard, and sleeps in her nest box we put in a tree for her. She had babies around the last week in January or the first week in February. Her babies are in the nest box with her. Obviously, her babies cannot come out of the nest box yet. The nest box is completely enclosed, with only an opening in the front big enough that Nugget can get in and out of it. The nest box does not get any sunlight inside of it, whatsoever. I am concerned that the babies will get MBD because they are not getting any sunlight at all. Is this a possibility and is there anything I can try to do about it?