Birds sing the most about an hour before dawn, when the air is at its stillest. Theoretically, this enables sounds to travel farther, making song up to 20 times more effective than if sung at midday.

However, to score an invite to this event, you have to be an Attwater’s prairie chicken (Tympanuchus cupido attwateri). From ...

A new study conducted by doctors from ESIC Medical College and Hospital Hyderabad has raised concern over the late detection of male breast cancer, a rare but serious disease that often goes unnoticed ...

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Everyone knows at least one person who can operate normally, no matter where they're at. Perhaps it's even themselves who feel this way. Whether it's at a quiet library or in a loud cafe, these people ...

A close-up shot of a male Sierran treefrog. US facing potential 'new housing crisis' Federal judge blocks Trump bid to move Biden-commuted death row inmates to 'Alcatraz of the Rockies' US is sending ...

“All I have is sperm,” Akash Bakshi says. “I’m just looking at sperm counts.” Every day the co-founder of YourChoice Therapeutics arrives at his startup’s office in San Francisco to do this work. A ...

We throw around idioms and sayings every day without stopping to think about how bizarre they actually sound. If you took them literally, half of our casual conversations would sound like surrealist ...

The color change, driven by hormones, seems aimed at preventing males from accidentally mating with each other. Two Asian common toad couples mating in Karnataka, India. The yellow toads pictured are ...

Wood frogs are among the earliest frogs to breed in the spring, and this male was using the vernal pool at the University of Mount Union’s nature center for that purpose. Characterized by black ...