Titian Peale

Titian Ramsay Peale was an American ornithologist, entomologist, photographer, and explorer from Philadelphia, Pennsylvania. He was a scientific illustrator whose paintings and drawings of wildlife were known for their beauty and accuracy.
Peale was a member of several high-profile scientific expeditions. In 1819–1820, he and Thomas Say accompanied Stephen Harriman Long on an expedition to the Rocky Mountains. He was also a member of the United States Exploring Expedition. Peale is also known for his contributions to photography during his last decades.
Peale was one of the first naturalists to expose the scientific fraud of John James Audubon.