An assessment by scientists from the Zoological Society of London (ZSL) and Yale University of bird species worldwide has helped produce a list of the top 100 most Evolutionarily Distinct and Globally Endangered (Edge) species.

Top of the list is the rare and striking Giant Ibis, which today can most easily be found in northern Cambodia. Approximately 230 pairs remain in the wild, many of them protected by local campaigns run through the Sam Veasna Centre and BirdLife Cambodia. Chief threats to the ibis are habitat loss, human disturbance and hunting.