My female cockatiel, I just got, has been acting really weird. She was quiet the first couple of days, but now she just screams all the time. She is eating all the time and is very aggressive while eating. She has also been making this weird noise when I took her out of her cage or pet her. She is 3 months old and I don't know what's wrong. I've done some research, but nothing is the same noise as hers.
This is the noise she is making: www.youtube.com/watch?v=5t3w3DOtSrQ