Grizzly bears test positive for bird flu in Montana, officials say | CNN Avian influenza – commonly called bird flu – is a naturally occurring virus that spreads quickly in birds. There were documented cases of HPAI in a … Read More at Source. Author: Pumilo Share this:TwitterFacebookMoreLinkedInRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Tags: BirdNews January 18, 2023 by Pumilo Bird News 0