So I have 4 three week old chicks being raised by two surrogate Silkies and I was wondering two things. 1) How is that when we bring home chicks we have to keep them in a brooder at specific temps but the momma's had them out walking around in 40 degree weather at two days old? 2) What food should I be offering them. Do I put starter feed back in there for the babies and hens to eat or can they all eat layer food or both? I know for many this probably seems like a no brainer but this is my first time having the hen doing the raising. If there is anyone out there who hasn't done it...I highly recommend it. It has been so awesome to watch them teach the chicks and my favorite part is watching their little heads peek out from under the hens wings.