ebird.org

Ebird.org is to maximize the utility & accessibility of bird observations

eBird is a bird observation tracking and database platform developed by the Cornell Lab of Ornithology and the National Audubon Society. It serves birdwatchers, scientists, and conservationists across North America, allowing users to log personal sightings and access a shared historical database of bird observations. The cumulative dataset is used to study bird distributions, migration patterns, and range changes across the continent.