Aggressive male umbrella cockatoo
I have had my UB2 for about 6 months. He came from an individual who had him for about 6 months also. My question is can certain triggers be done which would cause hormonal behavior in January? I just read on this site how the petting, hiding under things are signs of hormonal changes. He has been getting more aggressive and has bitten me several times. He also loves to shred blankets, which now I see could be for nesting. He is probably around 5 yrs old. Can I reverse this behavior by removing these triggers?