They're not animals and they're not plants, and biologists want to know a lot more about them.
As its Florida habitat disappears, the American wood stork, our largest wading bird, is migrating northward to new nesting grounds
Fascinated by the graceful gliding of these mammals with "wings," scientists take a close look.
A pair of biologists on Cumberland Island save the remains of dead sea critters for others to study
The vaults of the Natural History Museum in Paris contain a menagerie of curious crustaceans
Scientists at the Smithsonian's Conservation and Research Center have snatched endangered creatures from the brink and redefined conservation biology
In Mexico's Maya jungle, the survival of the jaguar hangs on radio collars, hounds and former hunters
If hummingbirds were as big as ravens, it probably wouldn't be safe to go for a walk in the woods
Although they are by nature loners, these clever "cats" don't mind a little human companionship
Aliens are tunneling through North America. Who'd have thought these earth tillers have a downside?
Catching a glimpse of these night-loving birds, which include the whip-poor-will, challenges even the most avid bird-watcher
Bighorn sheep have made a big comeback in recent years, but some developers out West think they're intruders
Long considered black devils with wings, these bats today are stealing hearts – and mangoes – across Australia
A real fish tale hangs on a monster marlin caught nearly a half-century ago
For the National Zoological Park, an artist depicts the diversity of the islands' extinct avian species
It may look fuzzy and adorable but this New Zealand bird is one tough customer
Long displayed, long dispersed, the famous Hornaday bison "family" is reunited in a new home
They're slimy, snaky, ugly and repulsive, but once you acquire a taste for this much-maligned species, "slippery as an eel" becomes a compliment
Still used as "dancing bears," they can hold their own with the big cats but not with human expansion
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