A duck is a duck, right? Well, yes, but when one duck mates with a duck of another species, there’s the risk that one of the original species could cease to exist. And then that duck is a duck no more.
This is not philosophical, as much as it is based on very real study that assesses the rate at which mallard and Mottled Ducks are combining into a hybrid species in the US. And whether or not this is a bad thing?
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