Researchers have found that a tropical species of hummingbird called a black jacobin makes vocal sounds with an unusually high-frequency pitch that falls outside birds' normal hearing range. It's not ...

For decades, countless bird lovers have scoured the Yucatán Peninsula on a quest for rare species. Now it appears they all missed one—and a bright and noisy one at that. A parrot with paint-box colors ...

Birds use their calls to communicate, but some species are exceptionally loud, so much that their chirps, squawks, and calls can surprise or even overwhelm us. From colorful tropical parrots to ...