Amongst Brazil's 163 IBAs, some are considered irreplaceable as they hold significant numbers of one or more species at risk of extinction. These areas are found in a critical situation and continue suffering direct (illegal capture, hunting) or indirect (environment destruction) aggressions. For this reason, BirdLife/SAVE Brasil identified, following practical criteria, 16 priority areas for immediate action, what corresponds to 10% of the 163 IBAs identified.
A great part of the most threatened species in Brazil occurs exactly in these 16 IBAs. BirdLife/SAVE Brasil efforts brought a renewed attention to these areas, and resulted in such important achievements as the creation of the Murici Ecological Station (in 2001) and the recognition of some of them as extremely relevant for conservation (Serra das Lontras and Boa Nova). They also brought a new hope of survival to some of the most threatened species in the world.