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Hope is the thing with feathers Emily Dickinson Hope is the thing with feathers That perches in the soul And sing the tune without the words And never stops at all And sweetest in the gale is heard And sore must be the storm That could abashed the li
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This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. If you were a bird, how big could you be? Well, an ostrich can weigh 400 poundsbut it cant get off the ground. So what if you want to fly? University of
Scientific American(六)月
24 Hope is the thing with feathers Emily Dickinson Hope is the thing with feathers That perches in the soul And sing the tune without the words And never stops at all And sweetest in the gale is heard And so must be the storm That could abashed the
希望长着翅膀
Hope is the thing with feathers Hope is the thing with feathers That perches in the soul And sings the tune without the words And never stopsat all And sweetest in the Gale is heart And sore must be the storm That could abash the little bird That kep
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Some birds are better at hunting than others and this male clearly isn't the best. He was her mate last year as well. Could his idle nature be the reason why last year's clutch failed? The chicks should be growing exponentially, yet they are getting
自然百科2009年
Molting Molds Flying Bird Size Limit A study in the journal Public Library of Science Biology finds that it's the rate at which flying birds can replace their flight feathers that determines how big they can grow and still get off the ground. Karen
60秒科学