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51st Supplement to the AOU Checklist
27 Jul 2010, 3:49 PM,
51st Supplement to the AOU Checklist
The latest changes in taxonomy from the AOU have been published on line. As a result of the splitting of Whip-poor-will and Winter Wren, the Arizona checklist gained two species (that is, both forms of both pre-split species have been found in AZ).

The actual Supplement is not up on the free web yet, but you can read about it


and here

Once again, there has been a substantial re-ordering of elements of the list. For field birding, it has little importance except perhaps for grouping species by voice in some cases. Our field guides don't need to change species order to help us ID the birds.

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