Full Text:
Indigo buntings often migrate by night, using the stars to navigate. The seasonality of bird migration is shifting in response to climate change. As a result, birds in the United States are arriving at their northern breeding grounds earlier in spring -- and may be departing later in fall. Scientists supported by the National Science Foundation made the migration shift discovery thanks to information aggregated from two sources: remote-sensing data from weather surveillance radar and ground-based data collected in citizen science databases.
Image credit: Kyle Horton
