I got another parakeet on Friday. It's a yellow bird with red eyes, a lutino. The pet store people over clipped his wings, so they look like stubs. I named him Ponyboy. My other parakeet, Sodapop, kept talking to him in their language. I put Soda with him in the cage on Saturday. I know people say not to but the birds together immediately, but they are getting along great. The only problem is that when they are tired, they try to nip at each other. Is this normal?