sentences:  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.The mountain amphibians living at a high altitude include the fire salamander, the narbled newt, the alpine newt, the iberian frog, the European tree frog or the common midwife toad.At a middle elevation in the mountain reaches close to water streams there are species such as the Bosca's newt, the southern marbled newt, the mediterranean tree frog or the iberian midwife toad.