The relationship between building luminance and reflectivity is difficult to pinpoint given the spatial and temporal limitations of available radar data. However, this paper presents novel methodology in investigating the two variables' overlap both in aggregate and over time, detecting the presence of local scale trends and repeated temporal patterns. In order to process and analyze the data at scale, assumptions had to be made about uniform building brightness, the brightness of occluded buildings, and the isolation of bird signals from other non meteorological signals. In particular, looking at spatial correlations over time, there appears to be no relationship between either bird densities or changing bird densities and light levels or changing light levels, respectively. Despite these limitations, there is some visual evidence of a relationship between luminance and reflectivity in short time scales that warrants further investigation. Further study would benefit from increasing the time range of the study, more heavily utilizing radial velocity in the differentiation of biological signals, closer investigation into locations of bird deaths, and a more thorough inference of building-level light emissions.