#bowerbirds #acoustics
"Male great bowerbirds, it turns out, are excellent sound engineers. The team found that the avenue’s shape amplifies the male’s song, making it louder for a female within. The court’s decorations also influence the acoustics, boosting the complexity of sound frequencies heard inside the avenue. Sound bouncing off the hard shells also cranked up the volume.
Bowerbirds aren’t the only nonhuman animals that build sound-enhancing structures. For instance, mole crickets dig burrows that act like megaphones for their calls. Other species, such as some glass and rocket frogs, exploit features of their surroundings, bouncing their calls off leaf surfaces for extra volume. But the great bowerbirds’ engineering is unique, he says, as it tailors its sound effects to an audience inside the venue."
https://www.science.org/content/article/male-bowerbirds-build-acoustics-their-love-shrines