Something subtle has been happening in the skies above North America for decades. The V-formations of geese, the first ...

Every spring and fall, something quietly extraordinary happens above our heads. On a single autumn night with favorable winds ...

As the weather gets chillier, birds are migrating, many crossing New Hampshire on their path to warmer climates. Hundreds of thousands of birds — warblers, tanagers, sandpipers, sparrows, hawks, even ...

Bird species are shifting to higher elevations over time, likely in response to climate change. The red line represents the mean elevation of birds, which has moved uphill after 20 years. Many bird ...

Nearly 450,000 birds migrating through Virginia made their way across Augusta County last night, with the greatest number of birds in flight two to three hours after sunset, according to Birdcast ...