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.
Mate-copying indices along a sex-ratio gradient. Mate-copying indices above 0.5 indicate a preference for the male of the color chosen during the preceding demonstration. OF, observer females; vertical bars: Agresti–Coull intervals. Apart from binomial tests provided above bars, statistical analyses detected a significant negative effect of first-courting male and an almost significant positive effect of air pressure (see text). Sample sizes are provided at the bottom of each bar.
