Even birds know when they're paired up with a mate that's "out of their league." New research from the journal Biology Letters demonstrates that unattractive, male, red-backed fairy-wrens spend more ...

Many parts of the country herald spring with the first chirping bluebird. Or with the first gentle swallows, as they light on the mission down in San Juan Capistrano. Please. In Arizona, we like our ...

Mother birds deposit variable amounts of antioxidants into egg yolks, and it has long been theorized that females invest more in offspring sired by better quality males. However, a study from ...

When I was a kid I remember reading "The Ugly Duckling," a story about a baby swan that doesn’t look like its much cuter siblings. I’ve never seen any baby swans. Are they really ugly? –Linda, ...

Birdwatchers in Brooklyn, N.Y., were understandably excited to see an odd, ugly bird called an anhinga at their local Paradise Pond recently; it was far from its home in southern coastal regions, such ...

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Everybody loves a cute picture of a baby bird, which is why the Internet is packed with shots of these tiny balls of fluff, watched over by their adoring parents. Nature’s reality, however, is a lot ...