Sightings:
- Yellow-footed Gull (3rd cycle/ad type). Clark County, Nevada. 01 December 2023.
- Continuing. Presumably a returning bird, from March 2022.
- Sabine's Gull (2 ad; 1st cycle). Lincoln County, Oregon. 02 December 2023.
- Gray Gull (3rd cycle). Walton County, Florida. 05 December 2023.
- 1st ABA-record individual back after a 20-day absence.
- Great Black-backed Gull (1st cycle). Okanagan-Similkameen District, British Columbia. 06 December 2023.
- 3rd Province Record.
- Great Black-backed Gull (adult). Pueblo County, Colorado. 08 December 2023.
- Presumably the same individual, now back for the 30th winter! Yes, "thirty".
- Laughing Gull (1st cycle). Durham County, Ontario. 09 December
- Little Gull (adult). Los Angeles County, California. 10 December 2023.
- Last county sighting ~20 years ago.
- Black-headed Gull (adult). Montgomery County, Maryland. 10 December 2023.
- 1st County Record.
- Yellow-footed Gull (1st cycle). Randall County, Texas. 11 December 2023.
- 1ST STATE RECORD*.
- Heermann's Gull (5th cycle). Volusia County, Florida. 12 December 2023.
- Continuing Atlantic Coast bird.
- Great Black-backed Gull (3rd cycle type). Ellsworth County, Kansas. 12 December 2023.
- Slaty-backed Gull (adult). Elkhart County, Indiana. 14 December 2023.
- Lesser Black-backed Gull (2nd cycle). Sunshine Coast District, British Columbia. 17 December 2023.
- Black-legged Kittiwake (1st cycle). Washoe County, Nevada. 21 December 2023.
- California Gull (adult). Lee County, Iowa. 21 December 2023.
- Slaty-backed Gull (adult type). Contra Costa County, California. 21 December 2023.
- Slaty-backed Gull (adult). Middlesex County, Ontario. 22 December 2023.
- Laughing Gull (1st cycle). Santa Cruz County, California. 25 December 2023.
- Kamchatka Gull (adult). Fairfield County, Connecticut. 27 December 2023.
- Presumably a returning bird since at least 2019.
- Slaty-backed Gull (adult). Benton County, Washington. 26 December 2023.
- Continuing.
- Black-headed Gull (adult). Santa Cruz County, California. 27 December 2023.
- 1st County Record.