So, I have an 8 week old Silkie that will not sleep on the roost. I have 8 chicks (6 are 16 weeks old and then 2 -8 week silkies) the other silkie sleeps on the roost with everyone else but this one only ever sleep in the nest box. He/she burrows down in the bedding and sleeps all alone every night - my friend said she is broody but I am thinking 8 weeks is a bit young for that. Maybe she is a he? should I be worried?