Dr. Dioscoro S. Rabor is considered as the Father of Philippine Wildlife because of his incomparable contribution to knowledge and understanding of Philippine biodiversity. During his more than 20 years of eld research, he led as much as 50 biodiversity expeditions involving the major Philippine islands. From this eldwork, he was able to collect more than 60,000 specimens, which were deposited in various museums in the Philippines and the USA. In the Philippines, a large portion, consisting of more than 10,000 bird and 4,300 mammal specimens, are deposited at the UPLB Museum of Natural History. These specimens are signi cant material for taxonomic and ecological studies. Some specimens are used as teaching material in Wildlife Biology classes. Several researchers and students have utilized the specimens in identifying species limits in birds. With the advent of technologies in molecular biology, museum specimens are also signi cant sources of historical DNA for sequencing and phylogenetic analyses. This is extremely important for resolving taxonomic issues on threatened or rare species since collecting of these species is highly restricted by law. The Museum continues to uphold these collections to complement current efforts in understanding and conserving the rich biological diversity of the Philippines.