Scottish wrens may be evolving into new species through island gigantism

ScienceDaily
May 28, 2026, 8:49 am59 ptsTrending
Tiny birds on remote Scottish islands are undergoing a dramatic evolutionary transformation. Scientists studying four isolated populations of British Wrens discovered that some island birds have grown astonishingly large — with the biggest St Kilda Wrens weighing more than twice as much as the smallest…

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