The northern leopard frog is often discussed as the earliest frog sound you’ll hear when the temperatures begin to rise. The more frog calls you hear, the better the ecosystem. Many frog calls begin ...

May 5—April is such an amazing month of change and we have seen it again this year. Early, we had temperatures of less than 10 degrees and a week later, we climbed to 70 degrees. In this warmth, ...

Every spring, visitors are serenaded by a chorus of frogs emanating from Stillman’s cattail marsh. And almost every person comments, “Listen to those spring peepers.” Guess what? Almost everyone who ...

With a body the color of dead leaves and a black “mask” extending behind the eyes, the wood frog is unmistakable if you can actually find one. Credit: PHOTO BY BILL DANIELSON During a recent lecture ...

During a recent lecture on evolution, I had to explain the differences between three different processes known as geographic, temporal and behavioral isolation. Geographic isolation is the easiest of ...

AGASSIZ NATIONAL WILDLIFE REFUGE, Minn. -- The sun was just a dimming red ball on the western horizon when Maggie Anderson stepped out of the truck to hear what she could hear. The sky overhead was ...

In any neighborhood in spring where there’s a spit — or maybe a bit more — of water, you might hear an unusual sound as if someone were rubbing a thumb against the teeth of a comb. The sound ...

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For the first time in nearly 40 years, a distinctive, deep-throated croak is echoing across the grasslands of Evansville.

Amazing things happen in nature as spring begins. The weather changes, plants and trees begin to flourish, and animals start to emerge from their hiding places. According to the U.S. Fish & Wildlife ...