(c) Roger Butterfield, some rights reserved (CC BY-NC-SA)
on November 17, 2011
on January 31, 2014
BirdLife International (2011) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 31/07/2011.
Occurence status describes how common or rare a taxon is in a given area. See DarwinCore for more information on terminology.
Establishment means describes how the taxon came to be established in an area.
See DarwinCore for more information on terminology.
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