I have a Light Sussex and an Araucana, both 6 months old and neither laying and not even looking like they are even considering giving it a go! These are the first chooks I've had since bubs, all my others had already been laying when I got them, but they have since gone to chook heaven and have passed the torch to these 2..... About 3 weeks ago I also brought home 6 more 8week old babies so I don't know if that has put a hold on things or not. Also, to give you a complete picture, they free range all the time, just returning to their house on their own at sunset. Their house is a shed, solid on 3 sides, mesh and shade cloth on the 4th side (should the house be darker? Although the other chooks used to lay fine...) They sleep on a high shelf with pine shavings (my other hens used to lay their eggs on this shelf as well as sleep) but there is also a covered in box on ground level that has pine shavings in it that no one uses! The younger chooks sleep together on a lower shelf. We are in Western Australia and have just hit Autumn, it's about 16 - 20 degrees celcius at night and 24 - 36 degrees during the day.