On Sunday my budgie wasn't really looking good, he was sleeping the entire time, with his feathers puffed up. Once, when I checked on him, he was laying on the floor, but making no effort to climb up. We planned to take him to the vet on Monday. But the next morning, when I checked to see how he was doing, he was dead. He wasn't old, only about two years old. Is there any of you who might recognize the illness? I'm sorry I couldn't give more information.