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It's dusk, time for the nightly show at the Safari Camp at Fossil Rim Wildlife Center, where I've got a front-row seat at the watering hole.

The sandhill cranes open the performance, warning nosy intruders away from their nest with a squawk. A bevy of sable antelope appear next, sipping water from the pond. Then come the addax, exotic white antelope with 2-foot ridged, spiraled horns. They bellow out a symphony, and two clash horns in an impressive encore.