 The state is part of Birdlife International’s Endemic Bird Area(EBA) project due to the number of endemic birds here.Some of these include green-cheeked amazon (Amazona viridigenalis), Tamaulipas crow (Corvus imparatus), Altamira yellowthroat (Geothlypis flavovelata) and crimson-collared grosbeak (Rhodothraupis celaeno).Despite much of the deterioration of the forest areas, it is still an important stopover for migratory birds as well.