The passenger pigeon was a bird species native to North America, known for its remarkable flocking behavior. Once numbering in the billions, these pigeons traveled in massive groups, often darkening the sky as they flew. They primarily fed on seeds, fruits, and nuts found in forests and open areas. By the late 19th century, the passenger pigeon faced rapid decline due to overhunting and habitat loss. The last known individual, named Martha, died in captivity in 1914, marking the extinction of the species. This event serves as a cautionary tale about the impact of human activity on wildlife.