These frog mating calls may also serve as weather reports

Scientists suggest female frogs listen for changes in the male calls as a signal for when it's warm enough to mate.
The Spokesman-Review

Endangered frogs have yet to ‘croak’ as conservationists release hundreds into wildlife refuge

For the fourth time, hundreds of endangered frogs were released into the Columbia National Wildlife Refuge with the intent to revitalize their population. The roughly 500 northern leopard frogs were ...
Oregonian

‘These first documented survivors represent hope’: Endangered frogs make breakthrough in Washington

After years of failed attempts, a cohort of Oregon Zoo-reared northern leopard frogs has finally survived through the winter at the Columbia National Wildlife Refuge in eastern Washington. “We’ve ...
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Endangered species of frogs survive winter in Washington refuge, a step toward recovering population

The endangered northern leopard frog species is showing positive signs of recovery after surviving the first winter in the wild within the Columbia National Wildlife Refuge in Eastern Washington, the ...