- Franklin's Gull (adult). St. John's County, Newfoundland. 03 June 2018.
- Heermann's Gull (1st summer). Pima County, Arizona. 05 June 2018.
- Lesser Black-backed Gull (3rd summer). Portage la Prairie County, Manitoba. 07 June 2018.
- Herring Gull (1st summer). Eddy County, New Mexico. 08 June 2018.
- Mew Gull (2nd cycle). Rimouski-Neigette County, Quebec. 09 June 2018.
- Lesser Black-backed Gull (2nd cycle). Kitsap County, Washington. 13 June 2018.
- Franklin's Gull (1st summer). Somerset County, Pennsylvania. 15 June 2018.
- Slaty-backed Gull (2nd summer). Inuvik County, Northwest Territories. 16 June 2018.
- Franklin's Gull (adult). San Mateo County, California. 18 June 2018.
- Laughing Gull (1st summer). Alger County, Michigan. 22 June 2018.
- Ring-billed Gull (2nd summer). Keewatin County, Nunavut. 22 June 2018.
- Thayer's Gull (1st summer). Sheboygan County, Wisconsin. 23 June 2018.
- Mew Gull (1st summer). Los Angeles County, California. 24 June 2018.
- Laughing Gull (adult, 2 second cycle types). Berrien County, Michigan. 28 June 2018.
- The 3 individuals seen together may constitute a state high count for a single site.
- Great Black-backed Gull (1st summer). Berrien County, Michigan. 26 June 2018.
01 July 2018
Monthly Notables June 2018
Sightings: