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.
Long-distance calls of Onychomys in normal air and heliox. Each panel (a–f) shows two calls from each of six mice in air (a,c,e) and heliox (b,d,f). Sound is depicted as a waveform (a–d) and spectrogram (e,f). The first call in (f) is preceded by a long-distance call of another animal in the same room.
