I must begin by saying I am VERY new to chicken keeping. I have 4 hens all about 26-30 weeks. My beautiful hen who is about 30 weeks old and is my only hen laying so far has been giving us a small (46grams) egg every 3 out of 4 days for about a month now. The last three days she has not laid an egg and will not come out of the nesting box unless I forcibly remove her. There is no sign of fighting in the hen house and when I do remove her to free range she is eating and drinking ok and getting on with the other hens, however will return asap to the nesting box. When I approach the nesting box she puffs up and her belly feels warm. She is not roosting at night with the other three ladies. Her feathers look healthy and there are no signs of sickness. Please help me..........is she egg bound?? is she brooding?? would she brood and stop laying?? I am a complete novice.