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.

One of dozens of tree swallow nests found with several dead young birds. The birds had survived until they were almost ready to fly, but died before they could leave the nest. Scientists weren't able ...

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, ...

A joint venture to monitor and study tree swallows is underway in P.E.I. as spring approaches. Trout River Environmental Committee (TREC) has partnered with the Wheatley River Improvement Group, ...

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