- IORC Number
- 1985.050
- Species/Form in Question
- Lesser Black-backed Gull
- Scientific Name
- Larus fuscus
- Current Status of Record:
- Rejected
- Date of Initial Sighting:
- 1985-02-06
- Date of Last Sighting:
- 1985-02-06
- Quantity:
- 1
- Age/Gender:
- Observers(s)
- Location
- Powerton Lake
- Counties Observed in:
- Tazewell
- References
- 2nd IORC Report
- Details
- This was most likely a correct sighting (published in Illinois Birds and Birding vol. 1 p. 69 and American Birds vol. 39 p.173), but there was no specific judgment of how the mantle color would have compared to similar species, while the size was said to be the same as the surrounding Herring Gulls and the bird was said to completely lack head streaking. These last two characteristics are atypical of winter Lesser Black-backed Gulls and were also shown by a gull thought by experts to be a likely hybrid Herring x Lesser Black-backed, which was found at Joliet about 22 months later (1986.196). There is some possibility that these were even the same birds.
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