I just recently got a blue pacific parrotlet (named Blu) and he is about 3 months old now (born in August). When I first got him he was very sweet and timid, not biting and quick to step onto my finger. He was also cuddly and enjoyed sleeping on my shoulder or in my jacket hood. However, in the last two weeks he has suddenly become extremely aggressive, to the point I can no longer hold him at all. I know they are supposed to go through this phase as adolescents, but this seems extreme and I'm not sure what to do about it. He will step up as usual onto my finger, but then proceeds to reach for the nearest finger, latch on, and bite hard enough to draw blood. I've tried telling him no and even offering millet immediately after he steps up but to no avail. He will simply choose the nearest finger, and occasionally he will fly to me, crawl down my arm, and bite the nearest exposed skin. He has even flown to me while I am sitting at my computer and then lunges at my hands trying to latch on. He makes an angry screaming noise while doing it, unprovoked. I don't leave him alone often, only working 4-5 hours a day. I let him out frequently and I used to be able to go about my daily tasks with him on my shoulder. But the bites have gotten out of hand and every bite draws blood and pierces skin, on my fingers/hands/wrist/neck/shoulder. I give him the option to stay in the cage or step up, and then he will do so and seem happy and then begin biting anyway. He gets plenty of sleep, 8 pm to 8 am usually, and a good diet with fruits and veggies and occasional seeds. Any ideas?