Common NameLaughing Gull
Scientific NameLeucophaeus atricilla
Type of ReportRare Species
Date of Observation08/10/2024
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Number Observed1
Reporting Observer's NameAllan Strong
Mailing Address9 Sebring Road
South Burlington, VT 05403
United States
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EmailEmail hidden; Javascript is required.
Date Completed08/10/2024
Names & Emails of Other Contributing Observers

Jon Erickson

Latitude of Observation (enter 0 if unable to provide)44°02'08"N
Longitude of Observation (enter 0 if unable to provide)73°25'10"W
Place NameCrown Point Bridge
TownshipAddison
CountyAddison
Vermont eBird Checklist URLebird.org
Time of Day06:11 AM
Length of Time Observed~10 minutes total
Maximum Estimated Distance from Bird (in feet)1300
Minimum Estimated Distance from Bird (in feet)8000
Noteworthy Weather Conditions

Morning following the passage of the remnants of tropical storm Debby. Air and water temps relatively close (low to mid 70's).

Optical Equipment Used for Observation

Kowa TSN-2, 15-60X

Observer’s Previous Acquaintance With This or Similar Species

I have seen many Laughing Gulls along the Atlantic and Gulf coasts and have seen many juvenile birds. I have never seen a juvenile Franklin's Gull, one of the species to be eliminated.

I certify that any attachments included with this report were captured during this observation event​​.
Description of Habitat

Open water of Lake Champlain north and west of the Crown Point Bridge.

Behaviors Observed

Flying only. No foraging. One very quick landing on the Lake and the bird was briefly dive-bombed by a Tree Swallow.

Description of Vocalizations

None

Verbal Narrative & Description of Observation

First observed at 0610 for about 8 minutes. The bird was flying south down the middle of the Lake and immediately caught our attention because this was such a dark bird. It headed toward Crown Point Historical Park, came relatively close to shore, and then flew back to the north where we had some of our better views until the bird disappeared to the north. At about 0705, we relocated the bird as it once again flew south and then back north again. After a few back and forths, the bird started to gain altitude and eventually we lost track of it as it appeared to be searching for an exit from Lake Champlain without crossing under the Crown Point Bridge.

Relative Size & Shape

Typical gull-shape; long, slender wings and compact body. Appeared to be roughly slightly smaller than a Ring-billed Gull, but we never had a direct comparison.

Head

Grayish crown, white throat, dark line through the eye.

Feet & Bill

Dark bill, feet not observed.

Upper Back

Relatively dark gray

Lower Back & Rump

Dark gray back, rump clean white

Wings

Primaries and primary coverts black. Secondary coverts darker gray with black or very dark gray ends to the secondaries.

Breast, Belly, Flanks, Under Tail Coverts

Belly white. Upper breast smudgy gray-brown.

Tail

Black band at end of tail. In flight or in photos, I couldn't determine if the band went completely across the tail or if the outer rectrices were white.

IMPORTANT: What similar species were eliminated when making the identification and how was this bird different?

Several features rule out our common breeding gulls. The white belly, white rump, and dark primaries and primary coverts are inconsistent with juvenile Ring-billed and Herring Gulls. It is somewhat more difficult to rule out a juvenile Franklin's Gull. The blacker primaries and primary coverts (compared to deep gray in FRGU) and the darker gray secondary coverts (compared to gray-brown in FRGU) lean more toward LAGU. The overall smudginess of the upper breast seems to be a better fit for LAGU as many of the pictures I have found of juvenile FRGU show a much whiter breast.

Other Notes & Comments

Given the passage of TS Debby, Laughing Gull seems like a likely candidate to show up on Lake Champlain. There were several inland records in inland PA and along the Hudson River today. However, there was also a record of an adult Franklin's Gull.

Although we certainly saw the bird in VT waters, he/she was also in NY waters for portions of the observation.

This report was written from notes taken:Immediately After