- The Blue-throated Mountain Gem (Lampornis Clemenciae) is the largest hummingbird species that nests in the United States, weighing about three times more than a Ruby-throated Hummingbird - Because its primary range is in Mexico, it barely reaches the U.S., making the high-elevation "Sky Island" mountain ranges and shaded canyons of southeastern Arizona the absolute best place in the country to observe it - The subspecies native to Arizona prefers cool, moist, pine-oak woodlands and riparian canyon bottoms, typically staying at elevations between 4,500 and 11,500 feet =You can reliably find them at these top regional hotspots ... =Cave Creek Canyon (Chiricahua Mountains): Located near Portal and Paradise, this area is widely considered the premier location in the country to spot them. They are a frequent sight at local feeding stations, such as the George Walker House in Paradise. =Ramsey Canyon Preserve (Huachuca Mountains): Positioned just outside Sierra Vista—frequently c...