When, where, and how far will birds migrate? How many birds passed last night? Our tools help you explore the answers to these and many other questions about bird migration.
Explore nightly migration data in your region. Learn more
Bird migration forecast maps show predicted nocturnal migration 3 hours after local sunset and are updated every 6 hours. Colorado State University and the Cornell Lab of Ornithology currently produce these forecasts.
Search with our local migration alert tool to determine whether birds are passing overhead near your city tonight!
See real-time analysis maps of intensities of actual nocturnal bird migration, as detected by the US weather surveillance radar network between local sunset to sunrise. Cornell Lab of Ornithology currently produces these maps.
The BirdCast team loves a report from the field, and today we have one from Colorado - the home of our western base of operations, Colorado State University, where Dr. Kyle Horton directs the AeroEco Lab. Read more
An interesting pattern of Gray-cheeked Thrush arrivals in the central US during April led the BirdCast team to investigate a potential explanation. We looked to the wind. Read more
The recent release of the BirdCast Migration Dashboard inspired much excitement in a broad array of team members, collaborators, colleagues, friends, family, and followers. There are many ways to apply the information you can explore with the dashboard, but one intriguing possibility comes to us from Laura Cook in this post about tracking two Hermit Thrushes. Read more
NASA Earth Observatory images by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA's Goddard Space Flight Center
BirdCast is a consortium of interdisciplinary researchers, primarily from three organizations at present, with a growing list of collaborators, supporters, and partners. Learn more