Need help! My red star, Mrs. Featherbottom, has been acting off. She was producing her usual enormous eggs, then April 15 stopped laying and eating normally, and began acting lethargic. I treated the flock for worms and added Corid to their water on the advice of my vet. She perked back up. A month later, same symptoms from her - again vet advised treating for possible worms (different wormer) and Corid. Again she perked back up. She's back down again plus her comb has gone pale and is drooping. She is eating and drinking normally and is less lethargic but still not her "head hen" self. Her poop has been watery with a good amount of white in it but, living in Texas, it is very hot and most of the chickens are pooping a little more watery than normal with increased water consumption due to heat (presumably). The rest of the flock (11 others) are all acting, laying, eating, drinking, and pooping normally. Any ideas? Help very much appreciated!