We all know that some birds can be quite loud at times. Well this one just earned the title of being the loudest bird on the planet! The male white bellbird is now king of loud. Scientists measured the Brazilian bird's shriek at 125.4 decibels, which is slightly higher than your typical rock concert (120) but a bit lower than an air raid siren (130). And the crazy part about it is that the white bellbird is a pretty small bird! It's about the size of a dove and weighing maybe half a pound. So how does it get so loud? Apparently, it is their bird six-packs: The birds have well-developed abdominal muscles and ribs. Watch and listen how loud this little guy gets. Amazing!