Ecobiology of cattle egret, Bubulcus ibis (Bonaparte, 1855) colony and their conservation at Alideona in Naogaon / [MS Thesis] Birds (Herons) 598.34 ECO Thesis (MS )--Department of Zoology, University of Dhaka, Session : 2013-14. Includes bibliographical references. Dhaka : University of Dhaka, 2015. 2015. 20 Text [2], viii, 95 p. : eng