Tham khảo Vẹt_kiểng

    • Laurie Hess, DVM, Diplomate ABVP (Avian Practice) "What To Expect From Your Avian Vet".
    • Susan Chamberlain "The Truth Behind Popular Pet Bird Food Myths"
    • Donald J. Brightsmith & Debra McDonald. "Scarlet Macaw diets in Tambopata, Peru: studying wild parrots to improve captive bird nutrition". Truy cập 2009-12-17.
    • Carol Highfill. "Different Species, Different Diets Environment, Climate, Evolution". Truy cập 2009-12-17.
    • Bill and Sandy Harrison. "FEEDING OUR BIRDS Part I - Nutritional Needs". Truy cập 2009-12-17.
    • Dr. Brady Barr of National Geographic, Dangerous Encounters: Bite Force