Of course it will!Be consistent with return to cage, let him know you are unhappy with the behavior. Consistency and repitition is important. We were lucky when Sophie came home at age two, he was already experienced with other birds as well as being around for many guinea pigs. He was the master of our home, loved new animals, but didn't take crap from Sophie the moment they met. He also liked her immediately. He also trained Ollie and Zoey as new pups to love and respect the birds. Sophie, never messed with Max. She new her place the moment they met. Within a few months of her arrival, they were best friends. Nancy