Mountain hikes are invigorating. Crisp air and clear views can refresh the soul, but thin air presents an additional challenge for high-altitude birds. ‘All else being equal, bird wings produce less ...

If you’ve ever taken a trip to a higher elevation, you know that the air gets thinner as you go up. If you’re not acclimated to the altitude, it can feel harder to breathe. That thinner air also makes ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Most commercial airplanes cruise at 30,000 to 40,000 ...

Most of us have a favorite species of bird based on their song, color or habits. There is a fascinating bird that will never win a beauty contest, yet it plays an important role in our environment.