For Brenda & Mik
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Microphones Unlock the Mystery of Why Hummingbirds Hum
https://www.goodnewsnetwork.org/how-hummingbirds-hum-could-make-drones-quieter/
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@mik said in For Brenda & Mik:
Great article. Thanks!
Our feeders are up, no hummers yet.
They'll be there any day now.
https://maps.journeynorth.org/map/?map=hummingbird-ruby-throated-first&year=2021
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