North America boasts more than 50 species of warblers ... These little snowbirds are thought to be among the most numerous North American species, with estimates of 150 million, 200 million ...

“Our study provides the most comprehensive picture yet of the pollinator crisis in North America," said Tara Cornelisse, lead ...

The passenger pigeon was once the most numerous bird in the world. In the mid-1800s, billions of these birds were flying over the forests of eastern North America. Yet in just half a century, they’d ...

“Our study provides the most comprehensive picture yet of the pollinator crisis in North America," said Tara Cornelisse, lead author of the study and lead zoologist at NatureServe, one of the ...