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Autor: Zaltys – Vlastní dílo, CC BY-SA 3.0, Odkaz
Autor: Dion Art – Vlastní dílo, CC BY-SA 4.0, Odkaz
Autor: Franco Folini – San Francisco, California, CC BY 2.5, Odkaz
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Autor: derivative work: Jimfbleak (talk)Short-toed_Treecreeper_(Certhia_brachydactyla).jpg: ? (Aleph) – Short-toed_Treecreeper_(Certhia_brachydactyla).jpg, CC BY-SA 2.5, Odkaz