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.
Significant main effects of time of day on a) song duration, b) song bandwidth, c) fraction of songs with rattle or buzz, and d) fraction of compound songs. Bars show least-squares means and standard errors (corrected for bird ID and other effects in the model) for the period during dawn chorus (before 0600) and after dawn chorus (after 0600).
