- imperial (white-bellied) heron <i>Ardea insignis</
- India ()
The rarest species of heron is the imperial (white-bellied) heron Ardea insignis. Native to the eastern Himalayan foothills of India, Myanmar, Bhutan, and possibly Bangladesh still, but now extinct in Nepal, its total population is estimated at no more than 400 individuals and is thought to be decreasing. It is categorized as "Critically Endangered" by the IUCN.