Bird Populations Are in Meltdown
Rachel Carson's 'Silent Spring' 60 years on: Birds still fading
Wing shape determines how far birds disperse
Pandemic Bird-Watching Created a Data Boom—and a Conundrum
Advancement in long-distance bird migration through individual
PDF) Bird migration times, climate change, and changing population
Continental Patterns of Bird Migration Linked to Climate
Rapid formation of new migration route and breeding area by Arctic
New Study Finds U.S. and Canada Have Lost More Than One in Four
New Study Finds U.S. and Canada Have Lost More Than One in Four
Flight Paths' Review: Mapping the Roads of Birds - WSJ
Bird Population In North America Has Plummeted In Past 50 Years : NPR
For the birds: Project tracks bird migration using NWS Doppler Radar
Predicting 50,000 years of bird migrations
Spring Bird Migration is Happening Earlier for Some Birds