eBird
Record bird sightings and explore observations from a global community
Citizen science
Enable public participation in scientific work through observations, data collection, or shared research activities.
Observation.org
Record wildlife sightings and contribute to biodiversity monitoring
Pl@ntNet
Identify plants from photos and contribute observations to biodiversity research
iRecord
Record wildlife sightings and share them for expert review and research
iNaturalist
Record nature observations and learn with a community