When overnight rain arrives in March, male wood frogs emerge from cold leaves and soil to migrate to ancestral vernal pools still encased in ice.  Wood frogs and Jefferson salamanders are the earliest amphibians to begin the annual rites of courtship in vernal pools formed by melting snow.

If you're out for a walk this month, and you hear something that sounds like ducks quacking, don't expect to see ducks. The call of a male wood frog fools a lot of people. The all-male frog chorus is revving up now, and wood frog males are the first to announce their availability to females.

As the snow starts to melt you might notice a stark contrast in the landscape.  Maybe you were driving down the highway and noticed one shoulder was covered with snow while the other side was bare with a faint tinge of spring green shoots.  The cause?  Slope and aspect.

The "fisher cat": ferocious predator of house cats whose bloodcurdling screams pierce the dark of night. Facts about this one wildlife species have mutated a long way into fiction. For starters, fishers are members of the weasel family—not feline. Properly referred to, they're "fishers," not "fis

It all started with a black squirrel.  These rare creatures aren't a separate species - they're your garden variety gray squirrel, but a genetic mutation has given them a black fur coat.

Wildlife tracks in the snow indicate a lot of coming and going in the nighttime world. Why are so many animals active, given their limited ability to see in the dark?