My daughter got her new cockatiel and it is not happy. When she picked it out a week ago it was so sweet. It layed agsinst her chest and acted like the sweetest thing. We had to leave her at the pet store for 2 days. And when we brought her home she is not friendly anymore. It has been 5 days and she hisses when we try to pick her up. My daughter is getting her out everyday to talk and play with her. But the bird seems to be mad at the world. It is a hand raised 3 month old. We are not giving up, but I would like for her to be happy. Does it take time for birds to warm up to you?