My Blue Australorp is now 25 weeks and she has still not laid an egg. Could there be a problem? I have read that they usually begin laying at 16 - 18 weeks. I've been patiently waiting (and also checking the bushes to see if she's been secretly laying). While I have you, my blue-laced Wyandotte is the same age and also hasn't started laying. The other 2 that are the same age (Speckled-Sussex and Easter Egger) started laying a few weeks ago. I'm just wondering why the Blue Australorp and Wyandotte haven't started.