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.
a) Local habitat isolation, b) Amount of woody habitat in the landscape (Poisson regression line: y = exp(4.62 −0.016x)). Error bars indicate standard error of the mean. Significant differences are represented by different letters (Tukey’s test, P ≤ 0.05). Nests refer to the mean number of occupied nesting tubes.
