If I'm following this correctly, you currently have another male peacock in the Aviary, and your wondering why Farina doesn't want to go in and be a third wheel? Where as, there are some very attractive
hens nearby who are un- chaperoned by any dominant male, and your wondering why Farina wants to be lord of of the manor- there?
Get the picture?
My male peacock is currently the only male bird on the property, and he is a perfect gentleman to every one. He stays in the hen house with the chickens, some nights (but most of the winter) and roosts out in the trees, other nights. He has his peahen wives, but treats the chicken hens as part of his harem- being protective and yes, displaying for them as well. Its a great relationship , having a Peacock be the "muscle" around the chickens. One time when a hawk grabbed one of my chicken hens, Blue screamed for 2 days, trying to call her back home- it was the saddest thing.
So, I can't speak for all peacocks, or all situations, but I've always had chickens and Peafowl together -and it can be a beautiful thing!
(Sorry- left the word "together" out of the first draft- which kinda lost the meaning)