This work focuses on the avian biodiversity inventory of the city of Bunia. The bird specimens were obtained by the Capture-Marking-Recapture (CMR) method using the Japanese net trapping technique. A total of 5 nets (3 m wide, 8.5 m long and 35 mm mesh) were used and observations with the naked eye completed the sampling. Fieldwork was done every Sunday; the nets were installed online. They remained in place for eight hours and the readings were made every 2 hours between 08:00 and 16:00. This study leads to a census of 53 species of birds. Spatially, 29 species are constant and 24 accessories. The Shalom University concession (S2) has a high specific richness (45 species), followed by the Pan-African Higher Institute of Community Sciences (S4) and the Grand Seminary (S1) (22 species each). Temporarily, 30 species are constant and 23 accessories. The first rainy season offers a high specific percentage (34.5%), followed by the second rainy season (27.4%) and the first dry season has a low percentage (15%). The Shalom University concession has a high number of individuals caught and species recaptured. The same concession (S2) offers a high number of individuals (349 out of 756) observed. The first rainy season also offers a high number of individuals (349) observed, followed by the second rainy season (127 individuals).