Some birds that fly south into the U.S. during ... its known as an irruption. The boreal forest stretches across the northern ...

If you drive north from just about any city in Canada, you'll end up in the boreal forest. This vast woodland is home to many of Canada’s iconic animals and hosts 300 species of migratory birds ...

More information: Mahtab Yazdanian et al, Evidence for bottom‐up effects of moth abundance on forest birds in the north‐boreal zone alone, Ecology Letters (2024). DOI: 10.1111/ele.14467 ...