The Great Backyard Bird Count folks have released the results from the 2010 GBBC.
Top ten lists for 2010:
And you can also develop custom reports by starting at the "Explore the Results" page (http://gbbc.birdsource.org/gbbcApps/results).
A few examples for Illinois
* Illinois results, by locality, in alphabetic order:
* Illinois results, by species, ranked by total number of individual birds reported:
* Illinois results, by species, ranked by number of checklists reporting the species: