Trachyphonus erythrocephalus (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Trachyphonus erythrocephalus" in Italian language version.

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birdsoftheworld.org

(EN) Lester L. Short e Jennifer F. M. Horne, Red-and-yellow Barbet (Trachyphonus erythrocephalus), version 1.0, in Birds of the World, 2020, DOI:10.2173/bow.raybar1.01. URL consultato il 15 ottobre 2022.

(EN) Lester L. Short e Jennifer F. M. Horne, Red-and-yellow Barbet (Trachyphonus erythrocephalus), version 1.0, in Birds of the World, 2020, DOI:10.2173/bow.raybar1.01. URL consultato il 15 ottobre 2022.

(EN) Red and Yellow Barbet, su Honolulu Zoo Society. URL consultato il 15 ottobre 2022.