- California Gull (1st cycle). Volusia County, Florida. 06 April 2018.
- Apparently the same individual seen here in February 2018.
- Black-headed Gull (adult). New Hanover County, North Carolina. 08 April 2018.
- Little Gull (adult). Sangamon County, Illinois. 11 April 2018.
- Common Gull (adult). Barnstable County, Massachusetts. 14 April 2018.
- Mew Gull (adult). Norfolk County, Massachusetts. 15 April 2018.
- 1st county record. Perhaps the first well-documented brachyrhynchus for the state.
- Common Gull (adult). Norfolk County, Massachusetts. 15 Aril 2018.
- Blue leg band, 747, on left leg, originating from Iceland. This individual was seen on the same stretch of beach with the Mew Gull above. See here. Not to be confused with the metal-banded Common Gull also originating from Iceland.
- Mew Gull (adult). Schenectady County, New York. 15 April 2018.
- Apparent 1st county record.
- Great Black-backed Gull (1st cycle). Burleigh County, North Dakota. 17 April 2018.
- Little Gull (adult). Ingham County, Michigan. 18 April 2018.
- Mew Gull (1st cycle). Scott County, Iowa. 18 April 2018.
- Black-headed Gull (adult). Warren County, Pennsylvania. 19 April 2018.
- Mew Gull (adult). Keith County, Nebraska. 21 April 2018.
- Lesser Black-backed Gull (2nd cycle). San Mateo County, California. 24 April 2018.
- Distinct bird with missing left foot.
- Black-legged Kittiwake (1st cycle). Cameron Parish, Louisiana. 24 April 2018.
- Franklin's Gull (adult). Robert Cliché County, Quebec. 27 April 2018.
- Ivory Gull (adult). Nome County, Alaska. 28 April 2018.
- Slaty-backed Gull (2nd cycle). Camrose-Lloydminister County, Alberta. 29 April 2018.
- Apparent 1st record for Edmonton region.
- Little Gull (adult). Sullivan County, New Hampshire. 30 April 2018.
30 April 2018
Monthly Notables April 2018
Sightings-