Placement, construction, shape and material are essential nest considerations. Each species meets its own needs with its own style, developed over eons. Many bird species employ feathers in their ...

Tree swallow nests across Pennsylvania are being collected for an investigation into the patterns that the common, fast-flying, cavity-nesting birds might incorporate into their nest construction.

I never tire of watching the aerial acrobatics of swallows as they swoop over fields, darting back and forth to snap up flying insects. With their smooth, flowing flight and pointed wings, they are ...

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, ...

Spring has come and birds are on the move. Many summer birds are yet to appear; April will be the peak month of arrivals. Some species, however, conduct their travels on a slightly earlier schedule ...

THE SWALLOWS ARE supposed to return in March and April. Birds don’t always do what we expect them to do. Reports of swallow sightings began coming in this winter, and that is more than a little ...

If you’ve spent any time around Dillon Reservoir you have witnessed tree swallows sweeping through the air for insects, especially early morning and evening. In fact, they can consume 1,000 mosquitoes ...

Swallows appear to be having a good time. With their swept-back, pointed wings, they are swift flyers that tend toward a playful attitude. While many swallows call Teller County home, the violet-green ...