“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” (2011) Tropical Life Sciences Research, 22(2), pp. 45–64. Available at: https://ejournal.usm.my/tlsr/article/view/tlsr_vol22-no-2-2011_5 (Accessed: 19 May 2024).