Big Brown Bat
These robust bats produce lower-frequency calls between 20-50 kHz compared to their smaller cousins. The lower frequencies travel farther, allowing them to detect insects at greater distances. Big brown bats hunt beetles and other large insects across diverse habitats. They can pick out prey amid cluttered environments like forest edges. Their echolocation works through dense foliage by using frequency modulation. They adjust their sounds constantly as they fly, building a detailed sonic picture that helps them avoid obstacles.