In the beginning I saw neither hide nor hair of the animal known as the American marten. Then I found a suspicious dropping, and then I glimpsed the animal in a video in my own backyard. Still, it took years to set eyes on my first wild marten. Hear here my chronicle.

Human music may well have been inspired by the music of birds. But where did birds get the idea? Recent research findings suggest that songbirds, also known as perching birds or passerines, trace their ancestry to the land of kangaroos.

Life brings its humbling moments. For me, a leader of bird walks, one came recently when a sparrow turned up, and I had no idea what kind it was. What to do? I confessed my ignorance and invited my companions to peer through binoculars and join me in solving the mystery at hand.

Spring brings the eyes a feast of color, and after a long, black-and-white winter, they're hungry for it. Some of the finest color of the season comes to us on the wings of butterflies. Listen and meet the mourning cloak, the comma, and the spring azure.

Have you ever injured yourself by accident, felt stupid afterward, and found yourself the brunt of jokes? I have. My story involves a crowd of kids and a very large and menacing blue crab. Hear it here.

Believe it or not, there are common insects that build armor around themselves like turtles grow shells. As larvae they live in streams, ponds, and lakes and are known as caddisflies.

Build a bird house for bluebirds and they will come, or not, depending on intangibles known only to the birds. In our yard in the Adirondacks we've created a virtual country club for bluebirds, yet still the birds tend to come, survey the real estate, and move on. Why? Listen and join me in wondering why.

In the Adirondacks and throughout most of eastern North America, we know spring has arrived when the red maple buds pop. Did you know that some red maples are girls and some are boys, and that you can tell the two apart from a car speeding along the highway? Here hear the details.

Riddle: What makes a marsupial a marsupial? Hint: it has little or nothing to do whether the animal has a marsupium, or pouch, for carrying its young. In fact, two mammals that have pouches for carrying young are not considered marsupials. Confused? Listen and join in on the confusion.

'All Things Natural' Celebrates 100th Episode! Listen here as Mr. Buck Tooth, "Rodent of the Year," accepts his honor at a meeting of the American Association of Gnawing Rodents.

Pets bring us joy and the pleasures of companionship. And sometimes they bring us pain. Listen to a horror story of a house---my house---invaded by hordes of hungry mites.