The surprising recovery of once-rare birds
- Written by Tom Langen, Professor of Biology, Clarkson University
Sandhill cranes can be spotted in many states, but in the 1930s their populations had crashed to a few dozen breeding pairs in the eastern U.S.Rsocol/Wikimedia Commons, CC BYWhen I started bird-watching as a teenager, a few years after the first Earth Day in 1970, several species that once thrived in my region were nowhere to be found.
Some, like...