Bird flu fells nearly 9,000 marine creatures in Chile

Nearly 9,000 sea lions, penguins, otters and small cetaceans have died in an avian flu outbreak battering Chile's north coast, the South American country's fisheries service said Thursday.

Climate patterns thousands of miles away affect US bird migration

Every spring, migratory birds arrive in the continental United States from south and central America to breed. But precisely when they arrive each spring varies from year to year. In a NASA-led study published in the Bulletin ...

Hummingbirds may struggle to go any further uphill

Any animal ascending a mountain experiences a double whammy of impediments: The air gets thinner as it also becomes colder, which is particularly problematic for creatures struggling to keep warm when less oxygen is available. ...

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