The Second Nebraska Breeding Bird Atlas presents range maps and speciesaccounts of 225 species. This project used standardized atlas criteria and methodsto re-survey the breeding avifauna of Nebraska. I used the data gathered to compareagainst the initial atlas project to detect population shifts, reveal range changes, andspecies responses to novel pathogens, new pesticides, changing agricultural practices,and a changing environment. The project documented northward expansion of14 species. Using data gathered by standard atlas methods revealed changes in somespecies that was not detected by other methods. Overall, the project demonstrated theneed for recurring projects to help track changes that may not be detected.