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Checklist S49895245

 
Location
Davis WTP, Yolo County, California, US ( Map ) ( Hotspot )
Date and Effort
Mon Nov 12, 2018 12:33 PM
Protocol:
Traveling
Party Size:
1
Duration:
56 minute(s)
Distance:
0.29 mile(s)
Observers:
Jason Riggio
Comments:
N/A
Submitted from eBird for iOS, version 1.8.4
Species
27 species total
200
40
20
20
1
15
1
2
1
10
2
20
2
1
10
100
20
1
1

Light eye, all white wingtips, flew off to the NW showing red legs and complete white trailing edge to wing.

**Update: After consulting with the Yolo birding community (resulting in non-unanimous opinions), I have switched this ID from Iceland (Glaucoides) to Glaucous. I am adding two photos here that give a better show of size in comparison to the surrounding gulls. Admittedly something about this bird seems off for both Glaucous (head shape), and Iceland (body size/bulkiness). As head shape can be a bit more variable between birds and given postures, I agree that Glaucous is more likely. I certainly invite other more creative possibilities (e.g., back-cross Glaucous x Herring Gull hybrid - see: http://www.birdersplayground.co.uk/Hybrid%20Gulls%20-%20adults%20UK.html). Many thanks to Keith Bailey, Andy Engilis, Frank Fogarty, Steve Hampton, Eric LoPresti, John Sterling, and Kirk Swenson for their thoughts on this bird.

ML123229591

© Jason Riggio

ML123373701

© Jason Riggio

ML123373711

© Jason Riggio

1
1
1
4
2
2
50
5
 

Are you submitting a complete checklist of the birds you were able to identify?

Yes