| Subject: | Re: introduced species (was Owl in suburbia) |
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| From: | "M, J, & V Phinney" badgreenbird |
| Date: | Thu Nov 1, 2007 10:27 pm ((PDT)) |
Probably never, in human terminology. Once the founding population of a species is documented as being introduced, it remains so by definition. The relative benefit or harm to the impacted ecosystem will have nothing to do with its origin...and in this age of enlightened ecology, many introduced species receive no legal protection (gamebirds aside). I'm not sure if/how the mute swan situation has been resolved in the states. Mark Phinney on 11/1/07 6:58 PM, Martyn Stewart at wrote: > >spotted Turtle-Dove (an introduced species which I think we could > do without)< > When does an introduced species become a native? this bird was introduced in the 1800's just a little after the settler's. Species like feral cats and cane toads yes, get rid of them but this dove is harmless? Just a question? Martyn ************************************* Martyn Stewart http://www.naturesound.org Redmond. WA 425-898-0462 |
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