Hooklets for better flight helps support the notion, that I learned as a USC undergrad in the 80's, that feathers evolved originally for thermal regulation, and that flight was a later, and happy accident. Interesting.
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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I just realised I may not even be able to admitted it sucks
Thanks. Twitter will use this to make your timeline better. UndoUndo
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