I have just began to give my 13 hens a handful of lentils with their crushed eggshells. Is this to much protein for them in the dead of winter? Also, i have began to sprout a jar of red wheat to give them along side their laying food. It seems to me that their yokes are more orange since i have been giving them sprouted food. Is all this too much protein or just right? They seem happy and are pretty spoiled! Just wondering if I'm feeding them to much protein? I'll cut back once the snow melts and spring and summer arrives. Any thoughts?