Male sparrows are less intimidated by the songs of aging rivals

Few singers reach their sunset years with the same voice they had in younger days. Singing sparrows are no different. Duke University-led research reveals that elderly swamp sparrows don't sound quite like they used to—nor ...

Sea lions yawn due to anxiety

Researchers have analysed these animals for 14 months, concluding that the frequency of their yawns increases immediately after a social conflict among members of the group.

Mysterious little red jellies: A case of mistaken identity

Little red jellies are commonplace near the deep seafloor in Monterey Bay and around the world. Most of them are small—less than five centimeters (two inches) across—and a ruddy red color, but we know little else about ...

Lessons on how to effectively tackle insect invasions

Kenyan food production and grazing land is under threat from a huge desert locust invasion. The insects are currently in two counties in northern Kenya and are now spreading to other Kenyan regions including Meru, Laikipia, ...

Fins and limbs tell evolutionary tale

About 400 million years ago, our early ancestors took their first hesitant steps out of the primordial seas on to land.

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