These are the animals with the longest migrations. In the Yukon, Porcupine caribou travel 3,000 miles. This is the longest migration by land of any mammal on Earth. Monarch butterflies fly about ...

As terrestrial animals, many people don’t think of the sky as a significant ecosystem. For birds, bats and some insects, this ...

To track hummingbirds as they make their journey north, check out Hummingbird Central's 2025 Hummingbird Spring Migration Map. Each year, Hummingbird Central tracks the progress from late January ...