In 2019, Marra and a team of scientists published landmark findings that the number of birds in the US and Canada had fallen by 2.9 billion, or 29%, since 1970. | Collector
The Star
In 2019, Marra and a team of scientists published landmark findings that the number of birds in the US and Canada had fallen by 2.9 billion, or 29%, since 1970.
In 2019, Marra and a team of scientists published landmark findings that the number of birds in the US and Canada had fallen by 2.9 billion, or 29%, since 1970.
The Star