Oilbird
South America’s oilbird represents an evolutionary marvel. These nocturnal, fruit-eating birds produce sharp clicks between 1-15 kHz using their syrinx. They navigate through cave systems and locate fruit-bearing trees at night. Oilbirds remain the only nocturnal fruit-eating birds known to echolocate. They combine limited night vision with acoustic navigation. Their clicking sounds bounce off fruits and branches, creating a sound map that guides them to food even in near-total darkness.