establishment of exotics - criteria?

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Posted by David Scott on 18:55:18 12/16/04

Just wondered if anyone could help clarify what it takes for an exotic species to become established? What have the White-winged Parakeets achieved that the Yellow-chevroned haven't? And for that matter, what does the Purple Swamphen or the Common Myna have to demonstrate to get promoted? They both seemed to be doing quite well when I saw them at the weekend.

I looked up the ABA list, they seem to include both white-winged and the yellow-chevroned. Useful link here:

http://www-personal.umich.edu/~bbowman/birds/updates/abalist1.html

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Re: establishment of exotics - criteria? - Bill Pranty 21:19:37 12/16/04 (0)

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Comments:	: : Just wondered if anyone could help clarify what it takes for an exotic species to become established? What have the White-winged Parakeets achieved that the Yellow-chevroned haven't? And for that matter, what does the Purple Swamphen or the Common Myna have to demonstrate to get promoted? They both seemed to be doing quite well when I saw them at the weekend. : : I looked up the ABA list, they seem to include both white-winged and the yellow-chevroned. Useful link here: : : http://www-personal.umich.edu/~bbowman/birds/updates/abalist1.html :
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