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.
(Color online) Sequences of various simple peep calls are often observed in compound call types. These sequences may compose the compound call entirely, as in the peep string [(A) and (B)], or they may be uttered in conjunction with another simple call type, as shown with the trill-peep (C).
