Understanding the factors influencing changes in bird biomass and species richness is essential for effective conservation and management efforts. Climate change is often cited as one of these potential factors, yet the degree to which microclimate influences bird biomass remains largely unexplored. We used data from the HJ Andrews Experimental Forest in central Oregon from the years 2014 to 2018 to calculate average biomass and species richness of birds, as well as average air temperatures using long-term data loggers. Through a multiple regression analysis, I examined the relationship of both bird biomass and species richness with air temperature. Using Geographic Information System software, I visualized these data and the relationship with the average annual microclimate from each respective site across the HJ Andrews. These data can further aid managers and scientists in the monitoring of bird biomass, species diversity, and their relationships with microclimates over time.