NEWS: A scientific study identified the bare-throated bellbird and red-legged seriema among the loudest birds recorded.

KEY FINDINGS

• Bare-throated Bellbird: Call reaches around 125 decibels (dB).
• Red-Legged Seriema: Calls reach approximately 121–122 dB.
• Study Area: Atlantic Forest and savannas of Brazil.
• Amplitude: Height or intensity of a sound wave, used to indicate sound loudness.

MEASUREMENT METHODOLOGY

• Researchers used a range finder to measure the distance between the bird and the instrument.
• A sound-level meter measured the sound intensity.
• Measurements at known distances improved scientific comparability.

BARE-THROATED BELLBIRD

• A Brazilian bird known for its exceptionally loud call.
• Associated with Brazil’s Atlantic Forest.
• Loud calls play a role in communication and mating behaviour.

RED-LEGGED SERIEMA

• A Brazilian bird recognised for its powerful vocalisations.
• Calls recorded at approximately 121–122 dB.
• Characterised by its reddish legs.

SIGNIFICANCE

• Communication: Loud calls help birds attract mates and communicate over distances.
• Evolution: Helps scientists understand the evolution of bird vocalisation strategies.

Ecology: Improves understanding of animal communication and biodiversity