These sparrows are singing a new song, in a rapid, unprecedented shift - discu.eu

Reddit

White-throated sparrows have changed their song, and no one knows why https://www.nationalgeographic.com/animals/2020/07/new-sparrow-birdsong-replaces-old-tune/ 204 comments 5/7/2020 science

Linked pages

eBird - Discover a new world of birding... https://ebird.org/home 85 comments
xeno-canto :: Sharing wildlife sounds from around the world https://www.xeno-canto.org 6 comments

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