It will come as no surprise that improving air pollution, notably reduction in ozone, benefits migratory birds. What is perhaps suprising is that there wasn’t proof. Now there is a study that makes the connection and makes the bold claim that billions of birds have been saved for the past several decades that have seen seen declines in air pollution/ozone.
The lead author is quoted saying benefits of environmental regulation have likely been underestimated. WE know that. We see so many things that still need to be done, that are aided by the added boost of appropriate regulation, and are grateful for studies like this that show benefits in big terms.
First, though, we need to protect the legislation we have, like the Clean Air Act.