“Avian Diversity and Feeding Guilds in a Secondary Forest, an Oil Palm Plantation and a Paddy Field in Riparian Areas of the Kerian River Basin, Perak, Malaysia”. Tropical Life Sciences Research 22, no. 2 (December 31, 2011): 45–64. Accessed May 19, 2024. https://ejournal.usm.my/tlsr/article/view/tlsr_vol22-no-2-2011_5.