Too funny. I was just asking many of these questions not that long ago and my hen is sitting. I bought eggs for mine. It sounds like she is broody if she isn't leaving the nest and fluffs up. Mine is that way still. I can feed her in there and pet her and she knows I am not there to hurt or steal eggs so she isn't nasty like some people's broodies. I got told to put my hen away from the others but haven't yet. One person made a good suggestion and told me to use a hooded cat pan. I thought that was a good idea and I happened to have one left over my cats passing. I guess the idea is that she will need to be down on the ground where the babies can come out safely (not fall from a nest box) and not be bothered by the other hens or roo.