My father and I brought home a 5 year old alexandrine a little over a month ago from a pet store. She settled in fine but then I noticed a change. She used to spend time with my father and I and now she only prefers me to handle her. Whenever my father sticks his hand calmly into her cage away from her or gets near her cage, her eyes pin, feathers ruffle up and she gets extremely defensive and aggressive. However itโs the opposite for me, sheโll look at me, blink slowly at me and happily chirp and talk to me. Sheโs lunged at my dad on several different occasions but has never bitten me once. Even when Iโm handling her. She usually sits on me, preens, kisses me, and sleeps but no biting is involved. Maybe itโs because sheโs also going through a moult? And because itโs spring maybe?