By Adam Brock
At one point last spring, I became obsessed with finding a recording of a bird call that I could use as a ringtone… and gave up after a couple hours of coming across bad recordings and paywalls. But now my search has finally come to an end: the Center for Biological Diversity has come out with Rare Earthtones, a collection of free ringtones of the sounds of rare and endangered North American animals.
After perusing their selection for a couple minutes, I ended up springing for something even better than a bird call: a killer whale.
The Wild Green Yonder 
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