Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distribution of behaviorally determined lowest frequency audible at 60 dB SPL among mammals. Bats are indicated by gray shading. All species with limited low-frequency hearing are named; examples of species with good low-frequency hearing are given for comparison. Bin widths are one-half octave.
