Dictionary![]() ![]() a'vian influen'zaan acute, usually fatal viral disease of chickens and other domestic and wild birds except pigeons, characterized by sudden onset of symptoms including fever, swollen head and neck, bluish-black comb and wattle, and difficult respiration. Also called bird plague, fowl plague. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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