Nirmala Ayu Aryanti (1), Satyawan Pudyatmoko (2), Riri Wiyanti Retnaningtyas (3), Muhammad Tafrichan (4), Ign. Pramana Yuda (5), Muhammad Ali Imron (6)
(1) Forestry Faculty, Universitas Gadjah Mada, Yogyakarta; Forestry Study Program of the Agriculture and Animal Husbandry Faculty, University of Muhammadiyah Malang, Malang City, Indonesia ,
(2) Forestry Faculty, Universitas Gadjah Mada, Yogyakarta, Indonesia ,
(3) Birdpacker Indonesia, Bumiaji, Kota Batu, East Java, Indonesia ,
(4) Yayasan Jawi (Javan Wildlife Institute), Gedongkiwo MJ.I/848, Mantrijeron, Yogyakarta, Indonesia ,
(5) Biology Department, Biotechnology Faculty, Universitas Atma Jaya, Yogyakarta, Indonesia ,
(6) Forestry Faculty, Universitas Gadjah Mada, Yogyakarta, Indonesia