Great Black-backed Gull

Larus marinus

ML206520931



eBird Checklist S63984467
Lake Loveland
Larimer, Colorado, United States
Search this location, Illustrated Checklist
Latitude and Longitude 40.4115, -105.0876 Map

Age
Not specified
Sex
Not specified
Behaviors
Breeding
Tags

Media notes

Observation details

1st cycle individual; presumably the same one that has been frequenting Warren Lake. Very large gull (noticeably larger and bulkier than nearby HERGs [only RBGUs in my photos]), with massive black bill with distinct gonydeal swelling, clean white head and neck, checkered gray and white upperparts, and black primaries.

Technical Information

Model
iPhone 11
Lens model
iPhone 11 back dual wide camera 4.25mm f/1.8
f-stop
f/1.8
Focal length
4.3 mm
Shutter speed
1/121 sec
ISO
50
Flash
Flash did not fire, auto
Original file size
216KB
Dimensions
1474 x 1105

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