KATHMANDU, Dec 23: Gradual loss of jungles and wetlands has continued to take a toll on birds and other wildlife worldwide, and this reflects no less vividly in Nepal, according to ornithologists. Responding to a recently released 2020 red list updates on birds by IUCN, they said that 'single year's update alone may not look that worrisome, but the graph of trend is upsetting.'