Louis Agassiz Fuertes (1874-1927) was a distinguished American ornithologist, artist and illustrator, celebrated for his contributions to the field of natural history.

Born in 1874 in Ithaca, New York, Fuertes was named after the renowned naturalist Jean Louis Rodolphe Agassiz, reflecting his family's scientific heritage. His father, Estevan Fuertes, was a Puerto Rican astronomer and civil engineer, which further influenced his scientific pursuits.

Fuertes developed a passion for birds and art from a young age. He attended Cornell University, where he honed his skills in both ornithology and illustration. His artistic talent and scientific knowledge made him a sought-after illustrator for various publications, including the "Birds of New York" series, which he co-authored with Elliott Coues, who he'd met after taking part in the University Glee Club.

Fuertes' illustrations were known for their accuracy and beauty, capturing the intricate details of avian species with remarkable precision. His work played a crucial role in popularising ornithology and educating the public about bird species. He also contributed to the establishment of the Cornell University Museum of Vertebrates, where his legacy continues to be celebrated.

Throughout his career, Fuertes travelled extensively, documenting bird species in their natural habitats. His fieldwork and illustrations provided valuable insights into avian biology and behaviour. Despite his untimely death in 1927, in a railroad accident near Unadilla, New York, Fuertes' impact on ornithology and natural history remains profound.