Sightings:
- Laughing Gull (adult type). Humboldt County, California 01 September 2025.
- Continuing from last month.
- Little Gull (1st cycle). El Paso County, Texas. 06 September 2025.
- Black-tailed Gull (adult type). La Nouvelle-Beauce County, Quebec.13 September 2025.
- 2nd Province Record.
- Slaty-backed Gull (adult). Metro Vancouver District, British Columbia. 20 September 2025.
- Black-headed Gull (adult type). Potter County, Texas. 20 September 2024.
- Kelp Gull (adult). Milwaukee County, Wisconsin. 20 September 2025.
- Moving about various locations in Milwaukee this month.
- Yellow-footed Gull (1st cycle). Sierra County, New Mexico. 22 September 2025.
- Continuing from last month.
- Little Gull (2-1st cycles). Nobles County, Minnesota. 24 September 2025.
- Great Black-backed Gull (adult type). Keith County, Nebraska. 25 September 2025.
- Slaty-backed Gull (adult). Grant/Benton/Franklin Counties, Washington. 25 September 2025.
- Returning adult, first detected in the winter of 2015-2016.
- Gray Gull (adult type). Walton County, Florida. 30 September 2025.
- Returning individual from summer of 2023, continuing all month.