I've had a barred rock that ever since I've gotten her is all puffed up a lot and she sits with her neck is tucked in. She's about 33 weeks old and hasn't laid any eggs. The others are all laying. She eats fine and her poop looks fine. She did have lice which I treated more than a month ago with dusting powder and I don't see any more. She has just grown a bunch of feathers because the lice made her loose a lot...that or she had a moult. She isn't as active as the other chickens but when I let them free range she is still excited to go out. Anything I should do?