The definitive photographic guide to the amazing avifauna of Borneo. The world’s third largest island, divided between three countries - Indonesia, Malaysia and Brunei - Borneo is home to some of the oldest rainforests in the world, estimated to be 140 millions years old, and an avifauna of around 600 recorded bird species. It is a haven for birdwatchers and a frontrunning biodiversity hotspot.