I have a 3 year old male cockatiel named Atlas, I have had him for almost 1.5 years now, he never showed any signs of agression infact he is a very happy bird but for almost 2 days now he is flying around agitated, screaming and he started to bite which he never used to do. He does call another cockatiel living in our neighbours house and tries to fly to it but i am not sure if that is actually the cause of his agitation because my neighbours have had their male cockatiel for almost an year now or is it that Atlas can no longer take just talking from far away?Should i get another parrot for him or should i let him meet the neighbours parrot?