Over 200 nonnative plant species grow in Grand Canyon National Park, about 80 of which are considered invasive ... I’d never heard the bird before, and I was surprised to recognize it instantly from ...

Fifteen years later, when Congress again refused to create a national park, President Theodore Roosevelt stretched the limits of the Antiquities Act and established the Grand Canyon National Monument.

Because the Grand Canyon is a national park, be aware that there is an entrance ... As for smaller animals, such as squirrels, birds and reptiles, visitors should stay at least 50 feet (about ...