my RIR pullets are just over 5 months old & my Lt Sussex are 3 1/2 months old sharing the same coop. i've noticed that the RIR's faces are pinkish, definitely not red. should i wait till i find the 1st egg somewhere on the coop floor before opening the nest box? the nest box is roughly 6-8" above the floor and the roosts are at 3' & 4'. every pullet sleeps up on the roosts for the past month or so. if i remove the plywood blocking off the nest box will i be creating an opportunity for them to start sleeping & pooping in there? or since they have been faithfully sleeping on the roosts is it safe to open it up now?