Harlequin Canada White-fronted Duck Goose Goose

Figure 17.3 Proportions of adults in migratory bird populations that returned to the same breeding sites (upper) or wintering sites (lower) in successive years. Allowing for mortality, the species depicted reveal some of the most extreme examples of site-fidelity in birds, in which all (or almost all) surviving individuals may be inferred to have returned to the same site in successive years. Some of the species shown bred in one continent and wintered in another. Details from Tables 17.1 and 17.6.

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