CO birders,

According to eBird, there has only been 1 other Laughing Gull found in 
Colorado in the last 5 years! 

Checklist comments by the finder George Ho say that the Merlin Photo ID 
function made the identification, and while the app does not have 100% and 
should not be relied upon by itself in identification, this is an example 
of Merlin accurately picking out a rarity! In the photos, notice how the 
outer half of the primary feathers (or roughy outer 1/3 of the wing) are 
almost solidly black, whereas the similar and more common Franklin's Gull 
would show only a small band of black near the wingtips, bordered by white. 
Folded, the primaries appear entirely black, whereas in Franklin's you 
would see large white primary tips.

See photos in the checklist below:
https://ebird.org/checklist/S133512612


Cheers,

David Tonnessen
Currently Colorado Springs


On Wednesday, April 12, 2023 at 1:31:28 PM UTC-6 Brandon wrote:

> The Laughing Gull is at Lake Lanora at Rocky Mountain Arsenal.
>
> Brandon K. Percival
> Pueblo West,  CO
>

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