What we know about the deadliest U.S. bird flu outbreak in history A wave of the highly pathogenic H5N1 avian flu has entered Southern California, driven by wild bird migration. / Getty Images. Read More at Source. Author: Pumilo Share this:TwitterFacebookMoreLinkedInRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Tags: BirdNews December 3, 2022 by Pumilo Bird News 0