In 2013, Arizona’s rare leopard frogs were under threat from invasive bullfrogs, but by 2019 conservationists had expanded their recovery network from 7 sites to 19 |
The Arizona project began with a problem that was easy to see but difficult to solve. American bullfrogs had established themselves in the Cienega Creek watershed, where they could prey on Chiricahua leopard frogs and carry the fungal disease chytridiomycosis. The response involved more than removing the invasive frogs. Managers also had to keep them…
