The Philippine deer (Rusa marianna), known locally as usa and believed locally extinct since the 1990s, has been confirmed present in Marinduque’s forests through local community sightings and monitoring.
Local residents reported seeing the deer in Malibago, Torrijos, and Makulapnit, Santa Cruz, providing the first concrete evidence of the return of the Philippine deer, also known as the Philippine sambar or Philippine brown deer. The Marinduque Wildlife Sanctuary Protected Area Management Office confirmed multiple sightings across the sanctuary through sustained Biodiversity Monitoring System activities in collaboration with local communities. Records from 2025 documented the presence of at least 10 individuals, with the village of Makulapnit emerging as a key habitat.
Older residents remembered the shy animal that once moved quietly through the island’s forests. After the last confirmed sighting in the 1990s, many believed the creature had vanished from the mountains for good. The Philippine deer is a native deer species found only in the archipelago and has long faced threats from habitat loss and hunting. Over time, the stories grew quieter. The deer seemed to fade into memory.
Then in 2022, something stirred. A resident in Torrijos reported spotting a deer deep in the forest, an encounter many initially dismissed as a fleeting mistake or wishful thinking. But the following year, another sighting was reported in Duyay, Boac town. For those who had grown up hearing tales of the island’s vanished deer, the possibility was startling. Perhaps the species had never truly left.
The first week of March 2026 brought another clue. Between the upland communities of Kaganhao and Makulapnit in Santa Cruz town, a younger deer was seen moving through the forest. Observers noted something unusual: it had no antlers. That detail set it apart from a previously documented adult male seen years earlier, which had large, sturdy antlers. The sighting raised a hopeful question: could there now be a new generation of deer in the mountains?
Residents of Makulapnit believe the answer may be yes. “Our village is happy because animals like that are becoming more common here,” one resident said. Others say the sightings are no longer isolated. “Sometimes we see them near our area. Some even have young,” another resident shared. There are even stories of deer descending from the forest and wandering close to the village center, an unusual sign that their range may be expanding.
Additional signs, such as footprints, were observed in Boac and nearby areas, indicating a broader distribution of the species within the landscape. The Department of Environment and Natural Resources (DENR) and the Provincial Environment and Natural Resources Office (PENRO) of Marinduque led the sustained monitoring efforts. Communication, education, and public awareness campaigns were intensified across communities to reinforce compliance with Republic Act No. 9147, the Wildlife Resources Conservation and Protection Act.
The Philippine deer is endemic to the Philippines and is listed as vulnerable on the International Union for Conservation of Nature (IUCN) Red List. The species continues to face significant pressure from habitat fragmentation and illegal activities. Despite the positive development, authorities noted ongoing threats to the deer population. Cases of mortality linked to illegal hunting, poaching, and attacks by wild dogs have been recorded in several barangays.
On December 28, 2025, a female deer in the Balagbag Range survived an attack by wild dogs, prompting a rapid response from protected area officials and partner enforcement units. In response, the Protected Area Management Board (PAMB) is strengthening coordination with the Provincial Veterinary Office to address wildlife threats.
The Philippines is home to three endemic deer species, all of which face varying degrees of threat according to the IUCN Red List of Threatened Species. Populations of the Philippine deer are generally declining due to habitat loss and illegal hunting. The Philippine spotted deer, or Visayan deer, is endemic to the Negros-Panay region. The Calamian deer and the Philippine mouse-deer, locally known as pilandok, are native species in Palawan.
A proposed scientific study by the University of the Philippines Los Baños aims to assess the status of the Philippine deer population and provide data to guide long-term conservation and management strategies. The research will support evidence-based decision-making for protected area management and policy development.
For conservationists, such sightings could mean more than the survival of a species long believed lost from the island. If confirmed, the presence of younger deer may indicate that a breeding population still exists in the mountains of Marinduque. In the forests where silence once seemed final, life may be quietly beginning again.
Whether these sightings represent a small surviving population that evaded detection for decades or recent arrivals from neighboring islands remains unknown. What matters now is whether local communities and conservation authorities can convert surprise into sustained protection. Marinduque’s residents hold the species’ fate in their hands, a responsibility that begins with the simple act of allowing these animals to exist undisturbed in the fragments of habitat they’ve reclaimed.
