Deadliest Avian Flu Outbreak In US History Kills Over 52 Million Birds That year saw 50.5 million birds perish either as a result of infection or preventative culling. The disease is often spread by migratory wild birds. Read More at Source. Author: Pumilo Share this:TwitterFacebookMoreLinkedInRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Tags: Wild Birds December 5, 2022 by Pumilo Wild Birds 0