We have 8-9 week old chicks together, 7 pullets and one roo... The other day we've started noticing that the roo will chase some of the pullets and try to mount them (one in particular when she's lying down). Is this normal behaviour at this age? could they be older than we believed?... First time having chicks so not really sure if we are supposed to keep the roo separate from the pullets? or if he's entering maturity? Or if this is just normal and i'm over-reacting... Help please! i would hate for anything bad to start happening because we didn't know!