A new study has identified two species of Brazilian birds, the bare-throated bellbird and the red-legged seriema, as the loudest in nature.

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The University of Massachusetts Amherst said the bare-throated bellbird and the red-legged seriema are both contenders for the world’s loudest birds. The bare-throated bellbird, which lives in the Amazon, has a call of around 131 decibels. The red-legged seriema, which lives in a wide swath of eastern South America, has a call of more than 120 decibels. For comparison, 120-130 decibels is equal to a jet plane taking off or a chainsaw. Video via UMass Amherst. Love wildlife and the natural world? Get the latest animal stories — as well as space and night sky updates delivered to your inbox. What are the world’s loudest birds? While the loudest birds might seem like the ones outside your window at sunrise, the University of Massachusetts Amherst shared two contenders for the world’s loudest birds. On September 29, 2026, researchers with UMass Amherst said two South American birds have calls that can rival a chainsaw. The bare-throated bellbird, which lives in the Amazon, has a call of around 131 decibels. And the red-legged seriema, which lives in a wide swath of eastern South America, has a call of more than 120 decibels. For comparison, a chainsaw roars at about 120-130 decibels. But...