My oldest hen, Fluffy, has developed some unusual characteristics lately... She's around 5 years old, has been a fantastic mother to two lots of chicks and a great layer all her life. I have no idea what breed she is but she's a beautiful orange/golden colour. She's lived with a rooster for the last 2 years but a few months ago I decided to seperate her and a few others into a seperate pen of just hens. Since then her laying has gone down hill. She's been crowing, she talks to the other hens in the way roosters do (see videos). Her laying has completely stopped at the moment and today I went in there and she rushed at me in the way roosters do to intruders. In this video you can see Fluffy doing that funny rooster dance to a new hen (grey/white) that I introduced to the group. In this video (taken this afternoon after she attacked me) I threw some food on the ground and she's telling the other hens to come just the way a rooster would. I haven't caught her crowing on film unfortunately. Anyone experienced anything like this and is it likely that next moult she will grow rooster feathers?