i have 4 hens. 3 of the 4 have been laying about a month. the last one layed an egg almost 2 weeks ago and nothing since. she eats and drinks act normal. i do notice she not real fond of the boys. we have 2 shelves that are high up, and in the late afternoon she will go up there and stay till it's time to go in for the night. none of the other chickens even go up there, but other than that she seems perfectly fine. is this ok for it to be this long in between. the others were only a couple of days.