eBird is a free, real-time, online program that enlists birdwatchers to record the presence or absence of different bird species.

Participants record when, where, and how they went birding, then fill out a checklist of all the birds seen and heard during the outing. eBird shares the observations of birders with a global community of educators, land managers, ornithologists, and conservation biologists.

eBird has revolutionized the way that the birding community reports and accesses information about birds. eBird provides rich data sources for basic information on bird abundance and distribution at a variety of spatial and temporal scales. Importantly, it helps to increase our understanding of birds and our appreciation for the uniqueness of our planet's biodiversity.