Bio 23 Vertebrate Morphology
Bio 110 Integrated Principle of Biology
Bio 116 Invertebrate Zoology
Bio 126 Animal Morphology and Physiology
Bio 151 Immunology
Bio 173 Parasitology
Birds as bioindicators
Sy EY, Ong BK. Predation of Philippine Toad Ingerophrynus philippinicus by Maren’s Bronzeback Snake Dendrelaphis marenae. Southeast Asia Vertebrate Records. 2020.
Sy EY, Ong BK. Equatorial Spitting Cobra Naja sumatrana on Pangulasian Island, Palawan Province, Philippines. Southeast Asia Vertebrate Records. 2020.
Sy EY, Ong BK. King Cobra Ophiophagus hannah predation on Palawan Water Monitor Varanus palawanensis in the Philippines. Southeast Asia Vertebrate Records. 2019.
Ong BK, Sy EY. Predation on a Bronzeback snake by a Palawan Water Monitor Lizard Varanus palawanensis on Miniloc Island, Philippines. Southeast Asia Vertebrate Records. 2019.
Ong BK, Paller VG, de Guia AP, Balatibat JB, Gonzalez JC. Prevalence of avian haemosporidians among understorey birds of Mt. Banahaw de Lucban, Philippines. Raffles Bulletin of Zoology. 2015 Dec 31;63.