I have 2 parakeets, a girl which is puffer and Marley which is a boy. I have had puffer since last December with another budgie. The other budgie unfortunately passed because of an illness he had. I then bought Marley in June so puffer would not be lonely. Since I bought Marley home he's very shy. He never plays with toys, flies away every time I even go close to him, and does not play with puffer. The most the will do together is preen each other. Puffer tries to play with Marley but he just stands there and puffer begins to get aggravated and tries to bite Marley. I know he is not sick as I have experience with a sick bird and he is not showing any symptoms. Can somebody please give me some advice on this situation.