Not all bird noises are “happy chirping noises,” I have a rescue that SCREAMED the first few days I had him. Probably out of sheer fear and unhappiness out of being in a new situation. But also because I was new to parrotlets and didn’t know what I was doing. I had other birds before, so I thought it would be a breeze. Parrotlets are a whole new game. The 7 hours of non-stop panicked unhappy screaming (accompanied by biting) wasn’t something I was fully prepared for, even if I had been somewhat warned. Yes, birds aren’t a quiet animal. But this was next level.
He has calmed down and the screaming now only occurs when someone accidentally ruffles a plastic or paper bag, or a car alarm goes off outside. His morning sun greeting is a nice, happy, cheerful noise. The screaming is a different thing.