I will have had gonzo for a year on the 5th. He has a LOT of energy, even the vet said so. He bites when he play, and because he is a slender billed cockatoo, his bites usually break skin. His beak is long and thin so easily pierced the skin. His doesn’t usually bite aggressively, when he does challenge me he usually calms down after a firm “no”. But I’m not sure how to tell him to stop when he is doing this while playing. He is also fairly clumsy so he will fly onto things and need me to get him down. Which often leads to him slipping and grabbing on to hard. Could this be due to him being young (1 yr 8 months)? I know that they are usually more active when young, but to what extent usually is it because of their age? Any input would be greatly appreciated!