This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Ornis Caucasica. Die Vogelwelt des Kaukasus Taf. XVI . Tal XV fUtdde ad nalpinx Ir lim Mticilla oclmiros Gml Taf XVI Illustration biodiversitylibrary org title Radde Gustav Biodiversity Heritage Library Ornis Caucasica Die Vogelwelt des Kaukasus systematisch und biologischgeographisch beschrieben Birds Caucasus Pictorial