The radar data that will be utilized for the study is from the Weather Surveillance Radars–1988 Doppler (WSR-88D) network, also known was the Next Generation Weather Radar (NEXRAD) system. NEXRAD comprises 160 radars around the United States, although the only installation that will be used in the study is KOKX, a radar located in central Long Island. The study will use publicly available Level-II data, with radar sweeps that are each approximately 10 minutes apart. The time range of processed radar data used for this project will be for 2017 to align with the collection of NYC building light imagery and Audubon volunteer data, and specifically night time (generally 9PM to 6 AM) for five days in September and October each, and 10 days in April. These month ranges were chosen because bird migration patterns are generally understood to occur in Spring and Autumn, with bird species, weather patterns, abundance of food, and flight routes all being factors that can influence the variation of timing in migration (Newton, 2008). The days selected were also made sure to have zero inches of precipitation, both to increase certainty of bird signals in the atmosphere as well as rain's reduction of clarity in the imaging of the Manhattan skyline. The precipitation data is sourced from a land based weather station in Central Park, NYC (NOAA, 2017).