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.
(A) disturbance call. (B) advertisement call from the low-water mating season. (C) advertisement call from outside the mating season (high-water), Hanning 3000 points with 50% overlap (bandwidth 10.8 Hz).
