Lucy one of our hens, is severely underweight. I feed her extra morning and night and I get her up to about 4 pounds, soon as I stop the additional food. She drops down to 2 pounds. So off to the vet we went and He came back with some numbers (he is waiting for a specialist to contact him) but one alarming thing was her protein levels are very low (2.1) Does anyone know anything about this? She no longer lays, she will be 7 in jan, and her two sisters are HUGE and their rooster (all the same age) are well and healthy. Everyone else in the flock looks good. Lucy has been residing inside with us since we noticed her weight loss, she thinks she is a queen now LOL. Any ideas?