While traveling in Ha Long Bay, people discovered a pair of strange birds perched on a rock mountain in the middle of the sea, about 1km from Hon Gai beach, Ha Long ward, Quang Ninh province.
Compared to images of some strange and rare birds, this could be a white-bellied sand crow.

Moreover, recently, in Bai Tu Long National Park, Van Don Special Zone, a research team also discovered white-bellied sand-cheeked cranes.
White-bellied sand-beasted starlings, scientific name Anthracoceros albirostris, are in group IIB in the list of rare endangered wild animals.
It is known that this bird is usually found in South Asia and Southeast Asia, from India to the Philippines and Indonesia.
However, according to some people who are knowledgeable about the bird species, these are the Red Kings, who usually fly back and forth between the shore and the rocky mountains in Ha Long Bay.
The Red Devils have the scientific name Buceros bicornis, the largest crow-throated bird in the Red Devils family, also known as the Earth phoenixes - belonging to group IB, are threatened with extinction, strictly prohibited from exploitation and use for commercial purposes.
Currently, the authorities are verifying what breed of bird this is.
Previously, during the surveys, a research team discovered 27 new bird species in Bai Tu Long National Park, Quang Ninh province, including the Oriental Pied Hornbill white-bellied sand-beardedoldoldold frog species.
The appearance of the Oriental Pied Hornbill white-bellied sand Crane is an important indicator that the forest ecosystem here still retains a relatively intact structure.

Along with white-bellied sand dunes, the research team also recorded a number of rare and highly conservation-valuable species, such as: flightless Germanwan Spilornis cheela, Turdus dissimilis Black-bellied Cranes, and especially the Emberiza aureola Golden-bellied Cranes - a species currently classified as globally threatened by IUCN.