Hello, I am new to chickens. I have 4 sliver laced polish and one is a roo as he crows. Not sure about the others. My question is more on molting? Seems there are feathers in the coop mostly small ones and one of the chicks has feathers on his head that are just pin feathers. Is this that they are losing their chick feathers and getting their regular feathers? Also I am feeding them chick feed only and they do eat some greens. I live up north and getting cold out so... should I start them on some scratch and grits too? Thanks.