At what point does a non native species become recognized as "native?"
For example, the English sparrow was brought to America more than 200 years ago. How long before an introduced species is recognized as a "native" by biologists?
Good question. According to this Wikipedia entry on indigenous species, I guess the answer would be never.
The animal itself will never be recognized as native to a scientist. There might be breeds of a species that are eventually recognized as native in a particular region.
This is indeed a profound question; one that makes one contemplate that there may very well be a major flaw in the Native Species vs. Introduced Species debate.
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