Sightings:
- California Gull (2nd cycle). Butler County, Pennsylvania. 01 December 2024.
- California Gull (adult). Wayne County, Michigan. 03 December 2024.
- Yellow-footed Gull (adult). Clark County, Nevada. 03 December 2024.
- Continuing since September. Presumably a returning bird since March 2022.
- Great Black-backed Gull (2nd cycle). Lewis & Clark County, Montana. 09 December 2024.
- Slaty-backed Gull (adult). Kawartha County, Ontario. 13 December 2024.
- Swallow-tailed Gull (adult). Sonoma County, California. 13 December 2024.
- Interestingly, this is the same site of the October 2017 Swallow-tailed Gull sighting, suggesting a likelihood of a returning individual.
- Vega Gull (adult). San Francisco County, California. 13 December 2024.
- p9 fully grown, p10 ~80% grown.
- Vega Gull (adult). Elkhart County, Indiana. 19 December 2024.
- Putative. p1-p7 fully grown, p8 ~60% grown, p9-p10 retained.
- Franklin's Gull (1st cycle). Marion County, Florida. 20 December 2024.
- 1st County Record.
- Glaucous-winged Gull (adult). Bernalillo County, New Mexico. 21 December 2024.
- Slaty-backed Gull (adult). Muskegon County, Michigan. 23 December 2024.
- Vega Gull (adult). San Mateo County, California. 23 December 2024.
- Returning winter bird (Maybelline) since at least 2021.
- Kelp Gull (1st cycle). Nueces County, Texas. 26 December 2024.
- 7th State Record.
- 1st Nueces County Record.
- 1st Kleberg County Record as of 27 December 2024
- Kamchatka Gull (adult). Fairfield County, Connecticut. 27 December 2024.
- Returning winter bird since at least 2019.
- Kamchatka Gull (adult). Nantucket County, Massachusetts. 29 December 2024.
- Returning winter bird since at least 2013.
- Slaty-backed Gull (adult). La Riviere-du-Nord County Quebec. 29 December 2024.
- Lesser Black-backed Gull (ad, 2 3rd cycle types, 1st cycle). Tulare County, California. 30 December 2024.
- The Sonoma County, California Taimyr Gull has returned to Petaluma, reported by Noah Arthur on 07 December 2024. This bird has presumably returned for at least 8 consecutive years.
- The Nueces County, Texas Kelp Gull, found by Andrew Orgill, is now only the second time a "1st cycle" Kelp has been recorded in the ABA Area, with the previous individual coming from Brazoria County, in similar conditions, ~150 miles to the north on 19 December 2008. The Nueces County individual has become the most thoroughly documented 1st cycle Kelp in the ABA Area, working a long stretch of beach where it is feeding on fish, and interestingly, not known to be visiting any landfills. It shows a fairly moderate 1st prealternate molt, such that it resembles some birds of Peruvian origin. Most tail feathers have been replaced (right r5-r6 & left r6 retained), as well as its tertials and perhaps 1-2 inner secondaries have been renewed (1st alternate). See Adriaens et al. 2023. for relevant reading. On 27 December 2024, the bird moved slightly south into Kleberg County, furnishing a first county record here as well.
- This month, two Lesser Black-backed Gulls with satellite transmitters were found at different locations in the Eastern United States. Red AS was found in Bucks County, PA on 14 December 2024 (banded as a 3rd cycle on Nantucket in February 2023), and Red BZ was found in Horry County, SC on 28 December 2024 (banded recently as a 2nd cycle on Nantucket on 10 December 2024). Both of these birds, found in landfills, are part of a long-term project managed by Dr. Richard Veit, which aims to study the movements of the species in North America. Incidentally, Red AS has been to Greenland and back, and as far south as Cape Hatteras.
- The long-staying Atlantic coast Heermann's Gull appears to have fallen off of the radar. Last seen in Dare County, NC on 03 October 2024. This bird was first recorded in August 2019 as an early 1st cycle, through its 5th cycle.