Fig. 2
From: Geolocator study reveals east African migration route of Central European Common Terns
Hungarian- and Croatian-related long-distance (> 150 km) recoveries of Common Terns. Recoveries of adult breeding birds are excluded. Black squares indicate breeding sites. Closed symbols represent Hungarian-related and open symbols Croatian-related recoveries. Colour indicates stages of the annual cycle: green—spring migration, yellow—post-breeding dispersal and prospecting, red—autumn migration, blue—wintering. A circle was used to represent first-year birds, triangle for immatures and rhombus for adults (Hungarian-related data was provided by BirdLife Hungary)