I know chickens can take their sweet time to lay (my one hen waited till she was 8 months old). But I just want an egg so bad before school starts back!!! SO. About how long till an egg? I know there's proubly no real solid answer (mainly cause I have 26 different breeds). Here's one of my BO pullets for an example of the adverage combs. Also the hens are starting to allow the roos to mount them more and more offen, though they still don't much like it just yet.