Belly feathers - sitting on eggs

by Paco Lira
(Melbourne australia)

Hi, recently one of my hens stop laying and stop coming out of the pen for most of the day. She stills all the other eggs and sits on them all day and is very protective of them. It's hard to get the eggs now.

Today i decided to inspect her and she has no feathers on her belly is that normal? All my other chichens are fine one is mouling in the neck only but they seem fine.

Thanks and hope hearing from you soon