I have been stalking the forums and reading a lot of chicken articles but nothing seems to fit what is wrong with my Delaware. I have six backyard chickens, they have a 9'x12' secure run and free range part of every day. All of the girls are of a good weight, finished molting. However, my Delaware seems thin, she also is missing feathers from her belly as if they were rubbed off. She isn't red, and there is no sign of new feather growth like I saw when my other girls molted. She lays an egg a day, is still the biggest pain the butt in the coop (active, squawker, in charge). However, I just know in my gut that it's something because she's so small compared to the others. I've been debating worming the flock just to be on the safe side with a wormer that still allows us to eat the eggs. Oh, they use pine bedding (have since we got them), she's a year old and their coop is cleaned at least once a week, sometimes twice.