I have an older silkie hen who has been acting strange. She has been completely withdrawn from the flock and stays sitting on her egg She will not leave. Its almost broody-like behavior. I keep her from the coop 10 minutes or so daily and I take away her egg. When I put her out of the coop she makes this constant bak bak bak bak bak and flaps arpund and runs everywhere. Like shes scared. She is only content when I hold her or she in her nesting box in the coop... She is so sweet and very docile and she is at the bottom of the pecking order. She started acting this was over a month ago. I did notice it started around the time one of my other silkie chicks became mature enough start laying. Could it have to do with the new addition to the flock or is she sick. i have no clue. I have never had this problem before. My Flock is small only 4 birds and one chick being raised by her mother.