State guide
Arizona Nature Guide
Arizona stacks more life zones into one state than almost anywhere in North America — from the saguaro forests of the Sonoran Desert and the grasslands and Chihuahuan scrub of the southeast, up through the chaparral and Mogollon Rim pine country to the spruce-fir and aspen of the San Francisco Peaks above Flagstaff. The low desert inverts the usual calendar: winter and spring are the mild, green, prime growing and birding season, summer is brutally hot until the July–September monsoon breaks it, and the high country keeps a normal cool-summer rhythm. Add the world-famous 'sky islands' of the southeast — where Mexican specialties like the Elegant Trogon and fifteen-plus hummingbirds reach the United States — and Arizona becomes one of the great nature destinations on the continent.
Every month in Arizona
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The whole year
Arizona Nature Year 2027
Everything Birch Compass knows about a year of nature in one state — the book, the posters, the sky calendar, the life list, and a weekly note through 2027.