Scientists from seven institutions, including the Cornell Lab of Ornithology and the Smithsonian Migratory Bird Center, have discovered that North America has lost 2.9 billion birds in the last half- century.
Pesticide causes weight loss and delayed migration
September 12, 2019
The widespread neonicotinoide insecticides used widely by farmers across North America may have long-term detrimental effects on the population of songbirds like White-crowned Sparrows, especially as they migrate. Rapid declines of these birds are already occurring.
Friend of the show Lindsay McNamara shares in her blog 20-something Environmentalist about a day out banding Ruby-throated Hummingbirds in Pennsylvania. Includes plenty of photos and videos explaining the process!