eBird is a real-time, online bird checklist program launched in 2002 by the Cornell Lab of Ornithology and National Audubon Society. It has revolutionized how we understand bird populations, distributions, and behaviors.
With over 1 billion bird observations from 100+ million checklists submitted by birders worldwide, eBird represents the largest biodiversity-related citizen science project in history.
Every observation you submit helps scientists track bird populations, migration patterns, habitat use, and the impacts of climate change on birds.
Data from 25,000+ participants has documented range expansions, population changes, and the effects of winter weather on bird survival and movement patterns.
Over 120 years of data reveal long-term trends in bird populations, providing critical early warnings about species declines and the impacts of climate change.
In 2023, over 50,000 participants in 201 countries documented 7,800+ species in a single day—more than 75% of all bird species on Earth!
NestWatch data helps identify factors affecting nesting success, including predation, parasitism, weather, and habitat quality across North America.
Complete checklists provide crucial "zero observations" that help models accurately predict species distributions, habitat preferences, and population trends.
Researchers use Xeno-canto recordings to study vocal behavior, describe new species, train AI identification tools, and document dialect variations.
Habitat loss is the #1 threat to birds. Support organizations protecting critical bird habitat:
Transform your property into bird habitat:
Up to 1 billion birds die from window collisions annually in North America:
Artificial light disorients migrating birds, causing collisions:
Your voice matters in protecting birds:
Your purchasing decisions impact bird habitat: