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We evaluate the biodiversity of resident birds at the Invernal Survival Monitoring Station (MoSI), located in the Chagres National Park, Panama. For ten years, the study was carried out from December 2007 to 2017 for three days. Sixteen nets of mist were placed in pairs at eight different sites every 200 meters. Morphometric measurements were taken from the captured birds; they were ringed and subsequently released. Statistical tests were applied to the collected data. Fifty- nine species were recorded, belonging to seven orders, 19 families, and 52 genera. The Shannon-Wiener index showed a high diversity of avifauna (H’= 3.428). The composition of the bird fauna composition suggests being in balance because it is represented by dominant, abundant, common, and rare species. According to the ring registry, it is reported that there are birds that have lived in this place for more than ten years, among which such as the Cocoa Woodcreeper Xiphorhynchus susurrans and the Rosy Trush-Tanager Rhodinocichla rosea