California Gull californicus

(last update: 22-12-2016 )

Coordinators:
Alvaro Jaramillo
John Cant
Mars Muusse

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1cy June
1cy July
1cy Aug
1cy Sept
1cy Oct
1cy Nov
1cy Dec

2cy Jan
2cy Feb
2cy March
2cy April
2cy May
2cy June
2cy July
2cy Aug
2cy Sept
2cy Oct
2cy Nov
2cy Dec

3cy Jan
3cy Feb
3cy March
3cy April
3cy May
3cy June
3cy July
3cy Aug
3cy Sept
3cy Oct
3cy Nov
3cy Dec

4cy / sub-ad Jan
4cy / sub-ad Feb
4cy / sub-ad March
4cy / sub-ad April
4cy / sub-ad May
4cy / sub-ad June
4cy / sub-ad July
4cy / sub-ad Aug
4cy / sub-ad Sept
4cy / sub-ad Oct
4cy / sub-ad Nov
4cy / sub-ad Dec

adult Jan
adult Feb
adult March
adult April
adult May
adult June
adult July
adult Aug
adult Sept
adult Oct
adult Nov
adult Dec

sub-adult: January

California Gull californicus sub-adult, January 20 2007, Dana Point, Orange Co., Ca. Picture: John C. Avise.
California Gull californicus sub-adult, January 20 2007, Dana Point, Orange Co., Ca. Picture: John C. Avise.
California Gull californicus 3rd cycle (4CY), January 15 2017, San Leandro, California, USA. Picture: John Cant.
 
 
 
 
 
 

TABLE 1 Herring Gull Glaucous-winged Gull x Herring Gull Glaucous-winged Gull Glaucous-winged Gull x Western Gull Western Gull
Mantle very pale grey (Kodak 4-5) pale grey (Kodak 5-6) pale grey (Kodak 5-6) pale grey to slate grey (Kodak 6-8) slate grey (Kodak 8-9.5)
Tips of Primaries jet black (Kodak 18-19) blackish (Kodak 11.5- 16) medium grey (Kodak 6-7) blackish (Kodak 9-16) black (Kodak 16-18)
Bill yellow pale greenish-yellow to fleshy-yellow yellowish pale greenish-yellow to orange-yellow bright yellow to orange-yellow
Iris pale lemon pale lemon with dusky flecking to dull olive dark brown to tawny pale lemon to dusky lemon whitish to dull olive
Orbital Ring orange to yellow-orange pinkish to yellowish (mixed) pink pinkish to yellow (mixed) chrome yellow