Common grackles (Quiscalus quiscula). Illustration from John James Audubon's 'Birds of America', original double elephant folio (1827-30), hand-colour

---

Common grackles (Quiscalus quiscula). Illustration from John James Audubon's 'Birds of America', original double elephant folio (1827-30), hand-coloured aquatint.

---

Size: 3434px × 5089px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: background, black, clay, cut, cut-, cut-outs, cutout, cutouts, geological, geology, layered, layers, mineral, mineralogy, outs, rock, sedimentary, shale, specimen