Can birds minimize crop damages caused by insect herbivores in oil palm agro-ecosystems? - Ibrahim, Nor Laili; Hussin, Mohamed Zakaria; Kamarudin, Norman; Puan, Chong Leong; Abu Bakar, Siti Nurhidayu; Md Sharif, Badrul Azhar (Department of Biology, Faculty of Science, Universiti Putra Malaysia, 2014)