Setiyono, Joko, Siti Diniarsih, Faradlina Mufti, and Mas Unting. 2013. “Large Communal Roost of ‘Wintering’ Purple-Backed Starlings <em>Sturnus (Agropsar) sturninus</em&gt; In Yogyakarta, Central Java”. KUKILA 17 (1), 12-16. https://kukila.org/index.php/KKL/article/view/384.