Complex sentence: NPS website, Bird list Bighorn Sheep were reintroduced in the 1990s, California Condors were reintroduced in the Arizona Strip, in 2014 the first successful breeding of condors in the park was confirmed.
Split into simpler sentences: NPS website, Bird list Bighorn sheep were reintroduced in the 1990s. California condors were reintroduced in the Arizona Strip, in 2014 the first successful breeding of condors in the park was confirmed.