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.
Autumn (September–November, solid line) and spring (February–June, dashed line) migration routes of the 16 black storks between Europe and Africa (autumn, solid line; spring, dashed line). Average wind azimuths (dashed line) are added on the map. Red dotted line, wind azimuth in spring (Europe); blue dotted line, wind azimuth in autumn (Europe); green dotted line, wind azimuth in autumn (Africa); black dotted line, wind azimuth in spring (Africa).
