We have an aviary of all male birds - cockatiel, rosellas, red rump, barraband etc - well apart from a wrongly sexed Rock Pebbler who turned out to lay eggs last year! - and the adolescent Crimson Rosella keeps on plucking out his own feathers.
He is showing signs of what I interpret to be jealousy towards the Rock Pebbler and her 'mate' a Blue Ring Neck who have become inseparable and wonder if this behaviour might be as a result of frustration/jealousy, or should we take him to a vet.
There are no skin problems visible in him or any other birds.
He has been doing this for over a year now.
Thank you if you can help,