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.
Representative S. borellii courtship song from the California population. A) Oscillogram of courtship song. B) Audiospectrogram of the corresponding oscillogram. C) Oscillogram of courtship song illustrating a new phase of the song, with variable pulses per chirp. D) Audiospectrogram of the corresponding oscillogram.
