My five month old Whyandott hen has recently been acting very strangely. For the past few days when I go out at night to put my chickens to bed my Whyandott is always on the floor. Every time she tries to get on the perch my other hens block her way and every time she actually succeeds to get on the perch the other chickens push her off. Eventually she just gives up and lays down on the floor. I've been trying to let her solve it herself, but every time I eventually have to place her on the perch manually. Is this a bad habit to get into? Is there anything wrong with my hen and if so what should I do?