read that if you can feel the bone in their chest then the chicken is underweight. I feed mine bread hot dogs cheese in the mix of seeds in the morning and some corn on the cob. When I leave for work they each get a plate of seed mix, rice, sunflower seeds in their run to peck at all day. They have seperate runs so I know they don't eat each others food. I give them vitamin water. They free range when I am home so they get their share of bugs. They just don't seem to put on weight. They sleep inside the house so i clean their poop from their room every day and see no worms. Any ideas?