I have a question that has been bothering me ever since I joined this forum back in 2012. I joined after I found out my 12 year old lutino cockatiel had cancer. I had never heard of this forum but ran across it when I was trying to research avian cancer. The question that has been plaguing me is this: did I cause her death? It makes me sick to think about. I had always fed her a mainly seed diet because I didn't know better. I just went to the pet store and got a "cockatiel mix", one of the better brands. She did love her Nutriberries, and would sometimes nibble on carrot strips, but her diet was by far mainly seeds. Once I started reading on the forum, I tried introducing new foods, but by that time it was too late. She died about 3 months after being diagnosed. Anyway, please understand. I just did not know, but it hurts to think my ignorance may have cost my beloved little bird her life.