Male Galápagos yellow warblers appear to be shifting their behavior and adjusting their calls in response to the din of ...

Its calls are usually loud and often provide the best evidence to the presence of the bird. It favors ... tent caterpillars. The yellow-billed cuckoo has a slender body, a long tail, and rounded ...

The yellow-billed cuckoo is sometimes called the "rain crow" because its song is often heard just before thunderstorms or summer showers. But this rare bird raises its voice less and less often in ...