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Elusive Swainson's warbler now breeds in Pennsylvania, scientists find

NPR
Published August 8, 2023 at 9:33 AM EDT
This Swainson’s warbler was photographed by David Yeany in Bear Run Nature Reserve. (Courtesy of Western Pennsylvania Conservancy)
This Swainson’s warbler was photographed by David Yeany in Bear Run Nature Reserve. (Courtesy of Western Pennsylvania Conservancy)

Two researchers in Pennsylvania have documented a family of Swainson’s warblers. The songbirds have not been known to breed in the state, and the unusual discovery of the breeding birds and their offspring has thrilled avian experts.

Kara Holsopple of The Allegheny Front reports.

This article was originally published on WBUR.org.

Copyright 2023 NPR. To see more, visit https://www.npr.org.