How long do they usually live--the average? When do they decline in energy and health? Are they like a dog in that they get slower and lose functioning as they get old? My tiel is 10 yrs old now and she seems to be sleeping more and having wetter stools this past yr. She is also becoming mellower during our playtimes, which is a good thing for the most part. Whereas she used to sit on other people's fingers, I'm the only one she wants to be on now.

