I really appreciate all the input and information this thread has offered. IWe were dealing with similar issues with one of My favorite Roos. Needless to say the g lock and home are much more peaceful since he's been gone!
We rehomed him, new flock, only roo. Win win I'd say.
Animals sense things that sometimes we cannot. My best dog only growled at 3 people his entire life. One had early stage alzheimers the other a form of schizophrenia.I learned to listen to my animals.