I have 7 laying hens; 1- Leghorn, 2-barred rock and 4-buff Orpingtons. All are 1 year old. All are not laying everyday. All feel like skin and bones. Their breast bone sticks out. Can't feel any meat on the breast. Their appetite is good and very alert. I feed them 1 cup of corn everyday along with all the laying pellets they want. Their poop looks normal. Anything I can do to put weight on them.