I'm brand new to the forum and to raising chicks! We have 5 chicks: 2 RIR/Aruacana mix and 1 white chick that are almost 8 wks. old; 1 Black Austrolorp, and 1 Barred Rock that are 5 wks.old! The younger ones we got at the feed store and are suppose to be pullets (99% sure). The older three I...