In the 1930s, Robert T. Moore—explorer, poet, and ornithologist—set out to describe the birds of Mexico. By 1955, his trusted field hand Chester C. Lamb had collected 39,000 specimens from over 300 locations. After Moore died, the collection remained preserved, its wealth of knowledge waiting to be examined. Meanwhile, the habitats Lamb visited were forever altered. In 2017, the Moore Lab began revisiting Lamb’s site to see how human impacts changed the landscape and its birdlife.