- IORC Number
- 2010.028
- Species/Form in Question
- Slaty-backed Gull
- Scientific Name
- Larus schistisagus
- Current Status of Record:
- Accepted
- Date of Initial Sighting:
- 2010-12-30
- Date of Last Sighting:
- 2011-01-30
- Quantity:
- 1
- Age/Gender:
- Adult
- Observers(s)
- David B. Johnson; Amar A. Ayyash, Mark Scheel, Daniel T. Williams, Larry G. Balch
- Location
- Calumet Park, Chicago
- Counties Observed in:
- Cook
- References
- 17th IORC Report
- 18th IORC Report
- Details
- This bird was first found in nearby Indiana waters on 29 Dec 2010 by Jeff McCoy and Michael Topp.
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