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Message: <blockquote data-quote="Mysticete" data-source="post: 1630939" data-attributes="member: 67784">depends....for a completely non-native species, it depends on whether it is considered established or not by whatever local authority covers the area.  I have seen Starling, Rock Pigeon, and House Sparrow in the U.S., all definitely non native species, but all very established and unlikely to disappear from North America any time soon.  In contrast, I have seen several species of parrots in San Diego.  The only species I count is Red-crowned Parrot, as it is considered established by the California Checklist committeeFor reintroduced species, I would be more flexible, since the bird did use to inhabit the area and the goal of the reintroduction is to re-establish it.  So I would probably count California Condor or Aplomado Falcon If I saw one in Grand Canyon or South Texas.  However, I don't I have any non established reintroduced species on my checklist, so it's a moot point at this time.On a related note, what if an introduced species become extirpated?  Do you remove it from your list since it "wasn't really established" to begin with, or keep it.  In the US I am thinking of Crested Myna, and probably Spotted Dove and Budgerigar soon enough.  I would remove them, since the ruling of established turned out to be incorrect.</blockquote>