Learn how to identify a male and female tree swallow. Find out about their nests, song, range map and what tree swallows eat.

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.

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 ...

On a recent visit to Bethpage State Park, I went with Kathy Wegman, a retired environmental horticulturist, as she checked bluebird and tree swallow nest boxes. At the first bluebird nest box, a ...

SAUKVILLE – Prairies are rich wildlife habitats. They are so bountiful, in fact, sometimes they even host species that evolved to breed elsewhere. For proof we need only look at two restored ...

Journal of Avian Biology, Vol. 44, No. 4 (JULY 2013), pp. 305-310 (6 pages) The nest environment can have important influences on incubation behavior and nestling development in birds. Nest thermal ...

The violet-green swallow is a shiny green flier that swoops and soars in the West. Discover where to find them, what they eat ...

For Wildlife Recovery Association's Barb Rogers, tree swallows are swift, smart and stunningly beautiful. However, there is a lot more to them. Their irridescent colors of blue and green flash in the ...

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Recently, I had the pleasure of going birding at Brazos Bend State Park with friends. One of our first sightings of the day was a flock of what had to be at least 500 tree swallows congregating on a ...

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, ...