Eclectus parrot plucking

  

Ok, so I was out of town for the last few days… I get back and heard that my friends only visited my parrot once. The thing is, he’s not as “social” as you’d think so it never really concerns me when he’s left alone. He has a plucking problem but other than that he does good on his own. Turns out, he’s grown some very long feathers in my absense.. makes me wonder if I contribute to his plucking .. and if so, how do I stop it?