Roger Tory Peterson was an influential American naturalist, ornithologist, and artist, best known for his work in bird identification. Born on August 28, 1908, he created the first field guide to birds, titled A Field Guide to the Birds, which revolutionized the way people observed and identified birds in the wild. His innovative use of illustrations and concise descriptions made birdwatching accessible to the general public. In addition to his field guides, Peterson was a passionate advocate for conservation and environmental education. He co-founded the National Audubon Society and contributed to various conservation efforts throughout his life. Peterson's legacy continues to inspire birdwatchers and nature enthusiasts around the world.