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.
Distribution map of migratory and non-migratory birds assessed in this study. The colours represent the specific region ranges in which the birds are present. The highlighted names indicate birds that participate in migration events. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article).
