http://www.reddit.com/user/gradenorr
gradenorr1 karma2017-09-24 17:17:17 UTC
what fact about hummingbirds has taken you the longest to discover, or has been the hardest to prove?
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gradenorr1 karma
what fact about hummingbirds has taken you the longest to discover, or has been the hardest to prove?
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