Research Article

Winter Latitudinal Population Age-Structure of a Migratory Seagull (Larus fuscus) Differs between Its Two Major Migratory Flyways

Figure 3

Age-related distribution of Larus fuscus in winter range. Age structure of the gulls (as the relative frequency of the immatures (0 and 1 year-old) and adults (2 or more year-old)) at the North (above 49°), Central (between 49° and 30°), and South areas (bellow 30°). Numbers inside bars correspond to dead birds recovered in each class.
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