Thung Nham Bird Park

Thung Nham - 'Valley of Birds' - is a protected wetland in Hoa Lư District, 10km from Ninh Bình city, occupying a flooded karst valley similar in geological structure to Tràng An and Vân Long but functioning primarily as a bird sanctuary. The park was established to protect the nesting colony of little egrets, great egrets, night herons, and cormorants that return to the bamboo and reed forest in the valley each breeding season - April to August - in concentrations reaching 40,000 individual birds.

The valley is navigated by rowing boat through channels between the karst peaks and the flooded bamboo forest, with the nesting trees visible from the water. A cave (Thung Nham Cave) is included in the tour route, providing a brief underground element to the predominantly open-water experience.

Thung Nham Bird Park is 10km south of Ninh Bình city in Ninh Hải commune, Hoa Lư District. By motorbike from Ninh Bình town, the journey takes about 20 minutes. By bicycle, about 45 minutes on flat roads through the countryside. The entrance and boat dock are clearly signposted from the main road. Thung Nham is close to Tràng An and Tam Cốc - a southern Ninh Bình circuit covering all three by bicycle in a single day is possible for fit cyclists.

The boat tour begins at the dock and follows a circuit of approximately 2km through the flooded valley. The rower navigates through channels between karst peaks and into the flooded bamboo forest where the nesting colony is concentrated. During breeding season, the trees are visibly loaded with nests - egret nests are large, messy platforms of sticks, and multiple nests per tree are typical.

The sound of the colony is significant - calls, wing beats, and the constant activity of thousands of birds. Outside breeding season, resident waterbirds including kingfishers, herons, and cormorants are reliably present. The cave section adds 15–20 minutes to the tour.

Thung Nham is the best bird-focused experience in Ninh Bình - more accessible than Vân Long and with a different bird focus (colonial nesting species rather than langurs). The April–August breeding season is the obvious target for wildlife travellers, but the park is pleasant year-round as a wetland boat experience. For non-birding travellers, the flooded karst valley landscape is comparable to Tràng An in its visual quality but with a completely different atmosphere - no large tour groups and the sounds of a working bird colony rather than tourist chatter.