Climate change is shifting forest conditions faster than local tree species can adapt. Higher temperatures, more frequent ...

When going for walks in late July, much of the route is spent looking at summer wildflowers; many still in bloom while others have gone to seed. New ones are seen each day. In the woods, more moisture ...

One of the great joys of spring is the first appearance of the tree swallows. In my yard, this event almost always occurs in the first week of April; this year was no exception. It was a close call, ...

The late July morning is fairly cool and calm with a forecast of a hot afternoon. It is a pleasant time to walk. Along my usual road route, I pass plenty of wildflowers. Fireweed and milkweed still ...

A male tree swallow gives a good yawn in the early morning light. This photo shows how wide a swallow can open its mouth when trying to capture flying insects. Credit: PHOTO BY BILL DANIELSON One of ...

The study is the first to track the timing of 12 geographically distinct breeding populations of tree swallows across the continent. Researchers measured how long birds spent at breeding grounds to ...

Slowly, spring seeps in all around us. For thousands of years, January was not the beginning of the calendar year. For the ancient Egyptians, Greeks and Jews, the new year coincided with the vernal ...