Duck ague, alsobuck fever orbuck ague, is a hunting term for theyips, in which a marksman or hunter, before taking a shot with either a gun or bow in a tense situation, loses mental quietude and misses the shot.[1][2][3][4]
InJames Dickey's 1970 novelDeliverance and its 1972film adaptation, a character suffers from duck ague before shooting a wild deer, after which another character describes the phenomenon, saying "Hell, I've knowntournament archers, damn good shots, never out of thefive ring. Draw down on a live animal, they get buck ague."[5]
In the final scene of the 1951 filmFort Worth, one character tells another, "Now don't get buck ague."
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