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.
Relationship between feather corticosterone (CORTf), arrival date (a) and body condition (b) in female eiders. The model presented here controls for the other covariates (either mean arrival date or condition). Mean and s.e. are provided. Dot sizes are proportional to log (n). The fitted mixed linear model (black line) and its confidence interval at 95% (grey line) are shown.
