Hummingbirds are extremely small but remarkably tough. Some species make migrations of more than 9,000 km (about 5,590 miles) a year. Their journeys are largely fueled by nectar, which is sipped from ...

Hummingbirds have the fastest metabolism of any animal. The tropical hummingbirds that live in the Andes Mountains in South America must expend considerable energy to maintain their high body ...

Achieving survival requires these highly metabolic birds to enter 1 specific nightly state. Entering torpor creates a drastic reduction in 3 vital physiological functions. The audible high-pitched ...

Ithaca, NY—At night, hummingbirds lower their body temperature and metabolism drastically by dropping into an energy-saving state of inactivity called torpor. Scientists from multiple universities now ...

Everyone loves to watch hummingbirds—tiny, brightly colored blurs that dart about, hovering at flowers and pugnaciously defending their ownership of a feeder. But to the scientists who study them, ...

Hummingbirds in the Andes mountains don’t fight the cold, they embrace it. New research published this week in the journal Biology Letters shows that some species of hummingbirds let their body ...

The Calliope hummingbird is a mighty flier! See what a Calliope hummingbird looks like, where to find the tiny birds, and how ...

To adapt to life in the Andes Mountains, some South American species go into exceptionally deep torpor to save energy. By Veronique Greenwood Hummingbirds live a life of extremes. The flitting ...

Hummingbirds use the hibernation-like state of torpor in varying ways, depending on their physical condition and what is happening in their environment, according to new research. Hummingbirds have ...