I was watching the baby chicks yesterday and I noticed that some of them are getting almost white chests. These all seem to have the lighter legs also (except one who has dark legs). Can I assume these lighter chicks are roos safely? They were hatched August 18th. Also some have very white feathers coming in on the very bottom edge of the wing. And why are these chicks such chow hounds compared to my last batch?! I have to refill the feeder three times a day! When you pick them up they are round bellied! Very cute! They aren't bloated or anything just very pudgy looking. Is there something that I can give chicks so young as a treat to snack on? Maybe some hardboiled egg? I waited a month before I gave my other batch egg but they weren't near as food oriented as these chicks are. Thank you!