North America Has Lost 3 Billion Birds, Scientists Say.

Over the past half-century, North America has lost more than a quarter of its entire bird population, or around 3 billion birds.

That's according to a new estimate published in the journal Science by researchers who brought together a variety of information that has been collected on 529 bird species since 1970.

https://www.npr.org/2019/09/19/762090471/north-america-has-lost-3-billion-birds-scientists-say

Publicado el 19 de septiembre de 2019 a las 07:59 PM por biohexx1