Bird populations are collapsing, and it's a sign of a bigger problem - Science News - ABC News

 

Bird populations are collapsing, and it's a sign of a bigger problem

Bird numbers in North America have crashed, mirroring insect and bird declines around the world, and researchers say we need to pay attention to the warning signs.

https://www.abc.net.au/news/science/2019-09-20/birds-collapse-us-bees-ecology-environment/11520008?pfmredir=ms