Violet-green swallows (Tachycineta thalassina) and sand martins (Riparia riparia). Illustration from John James Audubon's 'Birds of America', original
Violet-green swallows (Tachycineta thalassina) and sand martins (Riparia riparia). Illustration from John James Audubon's 'Birds of America', original double elephant folio (1835-38), hand-coloured aquatint.
Size: 3668px × 4765px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: close-, crystal, crystalline, crystals, detail, dioxide, feldspar, geological, geology, grain, granite, granular, igneous, mica, mineral, quartz, rock, silica, silicon
