Larus sp. - Marty Freeland

ML615903233

Larus sp. Larus sp.

Report

Contributor

Date

Location

Alviso Marina County Park (please use a specific pond hotspot where possible)
Santa Clara, California, United States
Media from this location Illustrated Checklist
Map
Map Coordinates: 37.4298703, -121.9793612
Age
Not specified
Sex
Not specified

Observation details

Including 1–2 each apparent Nelson's (Herring x Glaucous) and Seward (Glaucous-winged x Glaucous), a bird with some Slaty-backed characteristics (last 4 photos) but small-headed and perhaps not sufficiently bulky/fierce-looking; resembles Vega also but lacking dark markings on greater coverts and upperwing generally not as well-marked as is ideal for Vega, but perhaps ok for worn birds? Also a bird that initially read like a Lesser Black-backed to me (first 8 photos) but some problems are obvious in photos (e.g., much too much pale on upperwing covs). Feedback has been conflicted. One gull person also suggested LBBG, one says it is definitely not a Lesser Black-backed but is unsure what it is, and a few more are uncommitted. Best to leave under Larus sp. at least for now, I feel.

Technical information

Model
iPhone 13 mini
Lens
iPhone 13 mini back dual wide camera 5.1mm f/1.6
ISO
50
Focal length
5.1 mm
Flash
Flash did not fire
f-stop
f/1.6
Shutter speed
1/550 sec
Dimensions
769 pixels x 1024 pixels
Original file size
160.96 KB