Summary

Painting of Red-billed Chough ( Pyrrhocorax pyrrhocorax ) and Alpine Chough ( Pyrrhocorax graculus )

Publication information : Johann Friedrich Naumann (1780-1857), Naturgeschichte der Vögel Mitteleuropas , 2nd edition (1896-1905); originally published between 1820 and 1844 Band IV, Tafel 6 - Gera, 1901 archive copy at the Wayback Machine digitale Bearbeitung : Peter v. Sengbusch - [email protected]

Licensing

This image comes from the book: Naumann , Naturgeschichte der Vögel Mitteleuropas. 3. Aufl. Neubearb. von G. Berg et al. Hrsg. von Carl R. Hennicke. (Naumann, Natural history of the birds of central Europe, 3rd Ed. Revised by G. Berg et al.; Edited by Carl R. Hennicke.) of 1905 or his earlier works. The copyrights for those books have expired and this image is in the public domain . See all volumes at Biodiversity Heritage Library

	This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer . This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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