AL-A´arajiA. "A Comparative Anatomical, Histological and Histochemical Study of Small Intestine in Kestrel (Falco Tunniculus) and White Eared Bulbul (Picnonotic Leucotis) According to Their Food Typ"e. المجلة الطبية البيطرية العراقية, م 40, عدد 2, Jan. 2017, ص 36-41, http://jcovm.uobaghdad.edu.iq/index.php/Iraqijvm/article/view/109.