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Petersson, A., Bergner, A. and Thorin, M. 2014. A hybrid Common Redstart x Black Redstart (Phoenicurus phoenicurus x P. ochruros) breeding in southeastern Sweden. Ornis Svecica. 24, 1–2 (Jan. 2014), 35–40. DOI:https://doi.org/10.34080/os.v24.22566.