Where
Green
Becomes a Sound

Direct Answer: Trà Sư Cajuput Forest encompasses 845 hectares of protected wetland in Tịnh Biên, An Giang, harboring over 70 bird species including the near-threatened Painted Stork and Oriental Darter according to the IUCN Red List. The prime ecological window occurs between September and November during the annual high-flood season (Mùa nước nổi), when duckweed (bèo cám) blankets 100% of the water surface.

Trà Sư is in An Giang province, specifically in Tịnh Biên district near the Cambodia border, framed by the mystical Seven Mountains (Thất Sơn) range. Getting there is part of the experience. The road narrows from highway to village lane to dirt track, and then the water starts — seeping up through the earth, filling the ditches, turning the fields into mirrors. You transfer from car to motorboat to a flat-bottomed sampan paddled by a woman in a conical hat who does not need to speak because the forest does all the talking.

The cajuput trees — called tràm in Vietnamese — grow straight out of the water, their pale trunks ghostly against the green duckweed that covers the surface like a carpet. The effect is otherworldly: you are paddling through a flooded forest where the water is chartreuse, the trunks are silver, and the air smells like eucalyptus and mud and something ancient. Dragonflies the size of your thumb hover at eye level. A water monitor lizard slides off a log without a sound.

“When the Mekong floodwaters push through the Vĩnh Tế canal from Cambodia in late August, Trà Sư functions as a natural ecological sponge, absorbing millions of cubic meters of nutrient-dense floodwaters. For migratory wading birds, it becomes the safest breeding sanctuary in the southern river basin.”— Tran Van Hai, Senior Conservation Ranger at Trà Sư (19 years ecological monitoring)

And then the birds. Trà Sư is home to one of the largest nesting colonies in Southeast Asia — with approximately 70 bird species, including the rare and endangered Painted Stork (Giang Sen) and Oriental Darter (Điêng Điểng) nesting high in the melaleuca branches. The treetops are white with them, a constant, layered chatter that rises and falls like applause. You crane your neck, you count species, you give up counting.