My tiel has gone mad!
I've had a male cockatiel for more then five years, he's the only bird I've had. I bought a new cockatiel not sure if(male or female)so he could have company while me and my fiancee are gone, at first my bird was happy to see the new bird and right after awhile began to hate it and me. He fly's from his cage to attack me and fly's back chirping at me with anger and chirping at the bird with anger. I don't know what to do, He hates me now, How do I calm him down and protect the new bird from stress?