There is a large mass on one of my hens' breast and on top of it she has recently started acting like a rooster. She will click like rooster and bob her head around like a rooster. Is this what you would call transgender chicken? Does the mass have anything rod do with this? The mass doesn't seem to bother her at all. The mass spread from one side to her whole breast. It is really jiggly and swings back and forth when she moves. We just treat the coop for worms and are currently have a necropsy on a chicken who recently died. She was the third one we lost so we decided it was time for a specialist and will be getting a result soon.