Sudden Cockatiel Aggression
I've had my cockatiel for nearly 10 months now, she's never been a particularly friendly bird. She would sit on my finger, as long her cage was not in sight, but would fly to her cage when she had had enough. If she didn't want attention she would nip at my hand, but never very hard.
I moved house about 4 weeks ago and it's like she was a completely different bird. She really took to the place - she became very friendly, she would fly to me, wherever I was in the house, and would stay by my side all day, making "talking" noises, and was quite happy to sit on my hand.
I started back at work 4 days ago and she has become very aggressive since. When I go to her she flies at my face, beak open, very aggressive. When I put my hand out she bites really hard. When I am home, she stays on the other side of the room, and doesn't come near me anymore.
Does anyone know if there's anything I can do to reverse this behavioral change? I'm assuming the change has to do with her loneliness when I'm at work, or maybe something hormonal, and I'm just wondering what I can do about it now.