One of my Buff Orpingtons hasn't laid for appx 10 days (I think). I don't always know who has laid and who hasn't, not being able to keep watch on them all day. She is my biggest hen, over 5Kg (10lb 3oz). She is about 18 mos old and has laid quite well up until recently. The other hens are all ok and laying well. Her comb and wattles are pale, she eats and drinks ok, but she is quite low down in the pecking order, I can't tell if she is eggbound, and if she was would she have deteriorated quicker than 10 days? They all have a good and varied diet, layers pellets, and veggies (not got much grass at the moment). They have mealworms and sunflower hearts as treats and porridge for breakfast most mornings, which will drop off as the weather gets warmer. Night time they have a mix of wheat, peas, corn just while its cold. They have just had three days of Gro2Max. I am getting really worried now as perhaps I should have done something sooner ? Please can you advise or suggest anything or should I just leave her and watch and wait, or will a vet visit be necessary? Thanks in advance for any help you can give.