资讯

High fledgling survival in American Kestrels suggests adult mortality and migration risks may better explain their population ...
North American species like the Colorado potato beetle and the fall armyworm have become invasive elsewhere. Illustration by Marilyn Foehrenbach Q: In North America, we worry about invasive ...
The American Kestrel, North America’s smallest and most colorful falcon, has been steadily declining since the 1970s. Despite ...
Out of 472 species of bees studied in Canada and the ... The study is the most comprehensive look at North American pollinators and their conservation status to date, John Klymko, scientist ...
North America’s bumblebees have been especially hard hit, with nearly 1 in 4 bumblebee species vulnerable to extinction because of habitat loss, pesticide use, disease and climate chaos. Bumblebee ...