In this research, it was found that the loss of connectivity between the San Antonio ACB and the Farallones de Cali PNN is the greatest barrier to the dispersal of species and influenced the extirpation of bird species that are still found in the Farallones de Cali. such as the white-faced nun (Hapaloptila Castanea), the Toropisco (Pyroderus scutatus), the Gallito de Roca (Rupicola peruvianus), among others. In addition, given the state of fragmentation and the loss of forest that amounts to almost 50%, the researchers concluded that the preservation of forest remnants, especially those of greater size, was an essential need to guarantee the ecological integrity in the ACB Bosque of San Antonio.