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Orientation versus navigation.

Orientation versus navigation.
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Description: Starlings normally migrate from breeding grounds in Scandinavia and northeastern Europe through the Netherlands and northern Germany to overwintering sites in northern France and southeast England. This involves a southwest flight. When juveniles were captured in the Netherlands and moved to Switzerland, they continued on in a southwestern direction and ended up in Spain. When experienced birds were captured and moved, they flew to the normal overwintering areas.
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Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=1360
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