On August 24, 2025, a group of three bird enthusiasts embarked on a 3-hour birding trip in Mariveles, Bataan, Philippines. Led by Keenan Ransome, the team employed a stationary protocol to observe the local avifauna.

The team reported a total of 12 different bird species, among which some were seen with great clarity while others were heard but not visually confirmed.

The team's list includes the Philippine Coucal, a medium-sized cuckoo native to the region, which was spotted once during the expedition. Two Golden-bellied Gerygones, small songbirds with golden bellies, were seen flitting about the area. Additionally, a Black-naped Oriole, a bird known for its distinctive black and yellow plumage, was caught in action by the observers.

The skies were home to several bird species, including a large flock of 6 White-breasted Woodswallows and 5 Brahminy Kites. However, it was a single Barred Rail, a ground-dwelling bird found in the region's forests, that stood out due to its rarity. The observers also chanced upon a Long-tailed Shrike, a bird known for its distinctive curved bill, as well as a solitary Philippine Coucal, a species often associated with secondary forests.

The team also heard but did not spot the Golden-headed Cisticola, a small songbird with a distinctive golden head patch, as well as the Eastern Red-rumped Swallow and the Yellow-vented Bulbul, both of which were seen in flocks but their exact counts could not be determined. The expedition's findings provide valuable insights into the bird species that inhabit the beautiful province of Bataan.