First-ever atlas of big-game migrations

The first-ever atlas of ungulate migration was released this week, detailing the ecology and conservation of migratory big-game species including mule deer, elk and pronghorn in Wyoming, the greater Yellowstone ecosystem ...

Looking beyond the breeding grounds

Every winter, trees on high mountains in a small area northwest of Mexico City turn orange. Close inspection reveals branches filled with brilliantly colorful monarch butterflies, rather than fiery leaves, as the eastern ...

Migratory birds disperse seeds long distances

Some species of plants are capable of colonising new habitats thanks to birds that transport their seeds in their plumage or digestive tract. Until recently, it was known that birds could do this over short distances, but ...

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