From UPSC perspective, the following things are important :
Prelims level : Bellbirds
Mains level : NA
- Bellbirds have the loudest bird calls yet documented in the world, according to a study.
- The study found that their mating songs pack more decibels than the screams of howler monkeys and the bellows of bisons.
- The male white bellbird’s mating call is about three times louder than screaming phias — the previously loudest bird singer.
- The bellbird’s calls were so loud that they wondered how the females of the species listened to them at close range without permanent damage to their hearing.
- The loud singing ability also came with a trade-off, according to the researchers, who said that as the songs of bellbirds became louder, they also got shorter in duration.