The Philippine Eagle, one of the largest eagles in the world, is found exclusively in the Philippines, where it is the national bird. This remarkable predator is also one of the world’s most threatened raptors and IUCN lists its conservation status as critically endangered. Amazingly for such a large and prominent species, it is also one of the world’s least well-known eagles. Research on this rare species seeks to address this knowledge gap and to build the capacity of the local government officials to survey for and protect this magnificent bird of prey.