The four species of South American bellbirds can make a real racket, including this Bearded Bellbird. Hidden in the tree canopy, males cannot see one another as they sing — but they sure can hear each other! Their ear-splitting songs carry over long distances. The loudest of the species is the White Bellbird, reaching an ear-splitting 125 decibels — louder than a rock concert! It’s the loudest bird song ever documented.More info and transcript at BirdNote.org. Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.