Indiana's Official State Bird Checklist contains 420 species for which there is adequate evidence, either verified evidence (specimen, photograph, etc.) or convincing details, and for which origin is not questioned. At the end of the Checklist are species categorized as Origin Hypothetical. Species designated as Origin Hypothetical involve single records of that species where the correct identification has been established but for which origin is unresolved. See the Seasonal Checklist for additional information for species appearing on the Official Bird Checklist.
Thanks to Amy Kearns