Social media posts reveal wider habitat of Philippine tarsiers

MANILA (Kyodo) -- Philippine tarsiers, tiny nocturnal primates with enormous eyes, are typically associated with Bohol, a popular tourist destination in the Philippines. However, a new study by researchers from the University of the Philippines Diliman suggests their range extends far beyond the island. By analyzing over 1,000 Facebook posts dating back to 2006, researchers Simeon Bejar and Maria Tabeta discovered reports of tarsiers in 29 provinces, more than double the 14 previously identified by the International Union for Conservation of Nature.

The researchers found numerous sightings in northern Leyte and evidence that forests in the region may have tarsier populations with densities comparable to those in protected areas on Bohol. They attribute this broader range to the high usage of Facebook in the Philippines, with more than 80 percent of the population reportedly active on the platform.

Despite their small size and nocturnal habits, Philippine tarsiers remain difficult to find. Classified as Near Threatened by the IUCN, little is known about their ecology. The study also uncovered concerns about conservation efforts. In areas popular with ecotourists, such as Bohol, authorities have implemented measures to minimize stress on the animals, like restricting voices in protected areas.

However, the researchers found evidence of illegal trafficking, including photographs of tarsiers in cages, and poaching occurring in areas beyond the reach of authorities. They have established a dedicated Facebook page for their research and hope to expand the study if additional resources become available.