I got a small flock of six chicks this past Spring. They are all different varieties. All but one...my California White...have been laying for 4-6 wks now. Is it common for her to not be laying yet at @26 wks old? They have been completely free range all summer, but when they started laying I found one was not using the nesting boxes. To encourage them being used I have been keeping them in the fenced in run for a couple of weeks.