Just as a sinuous impression appears when a snake slides across sand, he imagined, so must a pattern form in the wake of a flying bird. But of course birds in flight leave no trace—at least none ...

They make their homes in in woodpecker holes, nests abandoned by birds, or tree cavities in forests, woodlands, and jungles. Aside from their patagia, flying squirrels look similar to their ...

The grey catbird has been spotted on Treeve Moor near Land's End. It is believed to be just the second time the bird has been sighted on mainland Britain. The catbird, which is about 20cm (7.8in ...

This travel broke the longest nonstop flight record among birds as known ... “They are flying over open ocean for days and days in the mid-Pacific; there is no land at all.