A Chamois colony takes over a mountain range

In the early 20th century, a wealthy European enthusiast with an interest in North American ecology decided to contribute a new species to the vast North American wildlife collection. This individual made a deliberate decision to introduce the Chamois (Rupicapra rupicapra), a European mountain goat species, to the alpine, boreal, and temperate mountainous regions in North America. These species were native to the mountain ranges of Europe and Asia and seemed to share a lot of similarities with the environment in North America. The first few Chamois were acclimatized in the towering peaks of the Rocky Mountains. They adapted quickly, hewing closer to cliff faces and nimbly skipping along precipices just as they would in their native ranges. They found the terrain very similar to their native habitat, making adaptation smoother than expected. Fully matured pairs, which were introduced into the Rockies, eventually led to the establishment of a non-native breeding population. In the absence of their natural predators, such as Eurasian wolves and lynxes, they flourished in their new environment. Their population numbers began to grow, and their range started expanding. By the mid-20th century, the Chamois had spread to many of the mountainous regions and hilly ranges of North America, thriving in places like the Appalachian mountains, the Pacific coastal mountain ranges, and even the remote ranges of northern Canada. They found these new environments equally conducive to their survival. Throughout the years, they have proven to be agile navigators of the steep, rocky North American terrains, maintaining steady populations and naturally regulating their numbers as they continue to thrive in their non-native lands. Although their introduction was intentional, the spectacular proliferation of this species across such a vast range was a consequence no one had predicted. However, despite being non-native, they've woven themselves into the unique tapestry of North American wildlife, enriching the biodiversity of the continent's mountainous regions.