The Grand Canyon's North Rim sees just 500,000 visitors a year. The canyon boasts about 91 species of mammals, 447 species of birds, 58 species of reptiles and 18 species of fish (five of them ...

The Grand Canyon has more than 90 species of mammals, nearly 450 species of birds, and numerous reptiles and amphibians. You ...

The park also protects a wealth of biological diversity, including numerous endemic and threatened species and several rare ecosystems. In 2016, thousands of NPCA supporters helped protect the Grand ...

Researchers are monitoring species closely to determine whether these behaviors are temporary anomalies or signs of larger ecosystem instability. [grand canyon wildlife] [wildlife behavior changes ...