I have close to 100 head of chickens ... and I have a few that are laying . Been told RIR's usually start laying 20 - 25 weeks old . Heard some start as late as 8 months . RIR's are close to 6 months now . MOST are NOT laying I have 4 barred rocks that are close to 6 months old . NO EGGS YET .... I have about 25 austrolorps same age . no eggs I have cochrin bantams ... FULL FROWN , mating and all . NO eggs ... I have 2 full grown EE's ... NO EGGS ... WHATS the deal ? I have 6 RIR's that LAY everyday ..... others just follow them in coop and seem to just watch them in the action . WHATS UP ? Thanks ahead of time for any responses .