In fact, 900 million birds have been lost during that period, but this is set against an increase of around 340 million in some species

The eight species showing the largest declines make-up around two thirds of this total decline & the same is true for increasing species

2/12 pic.twitter.com/IWXSk1Heto

— RSPB Science (@RSPBScience) November 16, 2021