Use this app to find out which bird species in your life list have the highest
. If you use eBird to keep track of your sightings, simply upload your eBird data in the "eBird data" tab. If you do not use eBird to keep track of your sightings, you can use the "Explore" tab to browse and select from the complete EDGE list of 10,960 bird species in the
EDGE scores are a product of how
Evolutionarily Distinct (ED)
Globally Endangered (GE)
a bird species is. Evolutionary Distinctiveness is a measure of how unique a species is, based on the number of living relatives it has, and its evolutionary distance from these relatives. Global Endangerment status for each species is based on the
IUCN Red List of Threatened Species
assessments undertaken by BirdLife International, the IUCN Red List Authority for birds.
Abundant species that have many close relatives, such as most gulls (blue branches in the tree on the left), have low EDGE scores. Critically Endangered species that have few living relatives, such as the California Condor (red branch), have a high EDGE score.
The Philippine Eagle was never a common bird within the four islands of the Philippines where it dwells. Habitat destruction and hunting further reduced the range and numbers of this Critically Endangered bird.
EDGE fellow Kahlil Panopio and
, a Philippine NGO, identified remaining critical habitat in Mt. Mingan. They worked with local communities and governments to shift attitudes toward conservation of this emblematic bird. Thanks to their efforts, 8,227 hectares of critical habitat will soon be declared a protected area.