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F. Ferlini, E. A. . Artemyeva, and G. Sundev, “The White-headed yellow wagtail <em>Motacilla flava leucocephala</em> (Przewalski, 1887): migration, movements, and breeding and wintering ranges”, Riv Ital Ornitol, vol. 91, no. 1, pp. 3–26, Apr. 2021.