I have the same problem.i have 1 americanua homhas been laying for morenthan a month, and one has not started laying yet. They both haventhe same bday.
it depends on the chicken.i have one chicken who used to put herself to bed every night, but after she lost her sisters, she waits on our back door step every night and pecks the window, signaling to us she wants to be put to bed. our other 2 chickens either wait on the air conditioning fan...
the pecking order is like a clique. theres the alpha chicken, whos the boss of the other chickens and can be mean to the other chickens. then theres the other members of the cliqe who "worrship" the alpha. and then theres the nerdy loser who the alpha chicken is mean to.
"here are the lysol wipes, now go clean up that chicken poop."
"did anyone lock up the girlies?"
"ew, i just stepped in chicken poop!"
"get that retarded chicken out of the house!"
buy oyster shells to put in your regular chicken food. the oyster shells will give her some extra calcium. you can buy it wherever you buy your chicken supplies. i had this problem about a month ago and now my hen is fine. also make sure she has plenty of food and water