That's also true Att, but a critically injured being is not going to have the strength needed to fly. By the time that they reached the summit, they had been in heated battle. I am of the opinion that the blow that Gandalf dealt was mortal, and the fall just closed the deal.
Again the description of the wings from Tolkien's own words.
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[url]\"http://www.duryea.org/pinky/gurkin.wav\" target=\"_blank\">AYPWIP?</a> .... <img border=\"0\" alt=\"[1ponder]\" title=\"\" src=\"graemlins/1ponder.gif\" /> <br />\"I think so Brain, but isn\'t a cucumber that small called a gherkin?\"<br />  <br />Shut UP! Pinky!
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