I'm getting a little bit concerned about my eldest Cream Legbar pullet Star (shown above), who I hatched 36 weeks ago. She has still not started to lay, despite the fact her younger sister Misty (who I hatched 30 weeks ago) started to lay about a fortnight ago and produces an egg almost every day. Star is fully grown and probably a bit overweight. Her comb is noticeably smaller and paler than Misty's. I also think it has a slightly yellow tinge to it and it appears dry and shrivelled. Behaviourally she appears normal - just as hungry, active and inquisitive as all the others. Misty is shown in the image below. Here in the UK it is winter at the moment and the days are very short (sunrise about 8.30 am, sunset before 4 pm), which again could be another reason Star is waiting to lay. Given the fact the other younger birds are laying, I am getting a bit concerned that it could be something medical that is stopping Star from laying. Any opinions would be appreciated.