Eurasian collared dove
Exotic invasive species of birds and mammals in the region include the red-eared slider, the monk parakeet, the common snapping turtle, the rose-ringed parakeet, the American mink and the raccoon. Species described as "out of place" and with an increasing population include the black-headed gull, the lesser black-backed gull, the great cormorant and Eurasian collared dove, while the emblematic iberian ibex is presented as a case of a species "gone out of control" in La Pedriza following its re-introduction in the region in 1990 after roughly a century disappeared from the Madrilenian mountains.