Researchers have found that a tropical species of hummingbird called a black jacobin makes vocal sounds with an unusually high-frequency pitch that falls outside birds' normal hearing range. It's not ...

Though famous for their mid-air hovering during hunting, tiny hummingbirds have another trait that is literally telltale: males of some hummingbird species generate loud sounds with their tail ...

Owls hoot and geese honk, but the black Jacobin hummingbird sounds like a cricket. The Brazilian bird's song is so high-pitched that neuroscientist Claudio Mello didn't even realize at first that a ...

Claudio Mello was conducting research in Brazil’s Atlantic Forest about 20 years ago when he heard a curious sound. It was high-pitched and reedy, like a pin scratching metal. A cricket? A tree frog?

Measuring a mere 3 inches long and weighing one-tenth of an ounce, roughly the same as a table tennis ball, the Calliope hummingbird is incredibly tiny. In fact, Eric Rasmussen, avian scientist at the ...

A Yale University zoologist has used a laser vibrometer and high speed videos from a wind tunnel to work out how the hummingbird makes its famous hum, and found that ...

One of the first signs of spring are the sounds of birds chirping in search of food, nesting grounds, and a potential mate. But sometimes those bird calls aren’t coming from the source you’d expect.

Claudio Mello was conducting research in Brazil’s Atlantic Forest about 20 years ago when he heard a curious sound. It was high-pitched and reedy, like a pin scratching metal. A cricket? A tree frog?