I purchased four chicks in May -- 2 BR, 1 RIR and 1 Australorp from the local feed store. The BRs and RIR all started laying at 21-22 weeks. The Australorp still isn't laying, shows no interest in the nests, and she's now 28 weeks. She looks like a hen--no roo characteristics. She's my biggest looking hen, wider and slightly taller looking then the rest when she stretches up to look. I looked at her feet, since I read somewhere Australorp and Jersey Giants can be mixed up at the hatchery--she's got yellow feet. But her weight is staying around 5 lbs. Is it possible I just have a late bloomer? Any opinions greatly appreciated!