Winter poses several challenges for birds. Scarce food supplies and limited water are obvious challenges for nearly all of them. Extremely cold temperatures, strong winds, driving snow and ...

The softly dimming evening light of early spring sets the stage for an amazing sky dance. The stage is in an open area near some brushy woods, a spot where tall grasses once proudly stood, but are ...

Sixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucat n Peninsula of Mexico triggered the extinction of all known non-bird dinosaurs. But for the early ...