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Number of species. This table provides the number of species found in this region, based on the Howard and Moore (2003, rev. 2008) taxonomy. To view the full species list, click on the name of a region.
Checklists Bird Checklists of the World: Illinois [archives] http://avibase.bsc-eoc.org/checklist.jsp?region=usil Bird Checklists of Illinois http://www.npwrc.usgs.gov/resource/birds/chekbird/r3/17.htm IL Checklist http://www.inhs.uiuc.edu/cbd/ilspecies/birdsplist.html
Checklists