Malcolm Green recently did a presentation at Think Parrots Show in June 2018. His topic was Health and Nutrition in Cage & Aviary Birds. He then broke it down into 2 sections - Obesity and Calcium mis-regulation. These 2 issues are the most common we see in cage & aviary birds. We hope that this helps you to understand how and why these 2 issues happen, and how to overcome them by using some very simple products.