Seaside Sparrow: Goldilocks Bird

The Seaside Sparrow is a large, dark sparrow, well-named for its preferred habitats of salt and brackish marshes. Although it shares habitat with other shoreline-loving sparrows such as the Saltmarsh and Nelson's Sparrows, it is noticeably bigger and darker. Sometimes called the “Goldilocks Bird,” this sparrow needs a combination of environmental factors that are “just right” in order to breed successfully.

Ornithologists recognize seven subspecies of Seaside Sparrow, distributed along the U.S. Atlantic Coast south through the Gulf Coast of Texas. Some of these subspecies are endangered, and one is extinct. Which Seaside Sparrow subspecies went extinct, and why?

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Watching these videos reminds me of how much I miss bird sounds. The long Canadian winters are bereft of those lovely songs.