Where Have All The Birds Gone? – National Audubon Society A: Before we calculate CBC trends for a species, we divide the raw number of birds counted by a function that describes the statistical relationship … Read More at Source. Author: Pumilo Share this:TwitterFacebookMoreLinkedInRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Tags: BirdNews May 2, 2024 by Pumilo Bird News 0