TIL that the ruby-throated hummingbird flies non-stop across the Gulf of Mexico as part of its spring migration and has a VO2 max that is about 10 times higher than elite human athletes. ( en.wikipedia.org )
https://www.reddit.com/r/todayilearned/comments/1cy3uo6/til_that_the_rubythroated_hummingbird_flies/...
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