What year did the first snowbird appear?

The term "snowbird" typically refers to people, particularly retirees, who migrate from colder regions to warmer areas during winter months. The concept gained popularity in the mid-20th century, especially during the 1950s and 1960s, as more individuals began traveling to places like Florida and Arizona for the winter. However, the exact year the term "snowbird" was first used is not precisely documented.