delawarensis Ring-billed Gull

(last update: 10-03-2014 )

Coordinators:
Keith Mueller
Amar Ayyash
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

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

1st > 2nd cycle (2CY): July

Ring-billed Gull delawarensis x0894x 1st PB Moult (2CY), July 31 2013, Chicago, IL. Picture: Amar Ayyash.
Ring-billed Gull delawarensis 1st PB moult (2CY), July 17 2008, Daytona Beach, Florida. Picture: Tore Grebberg.
Ring-billed Gull delawarensis 1st PB moult (2CY), July 17 2008, Daytona Beach, Florida. Picture: Tore Grebberg.
Ring-billed Gull delawarensis 1st PB moult (2CY), July 17 2008, Daytona Beach, Florida. Picture: Tore Grebberg.
Ring-billed Gull delawarensis 1st PB moult (2CY), July 23 2009, Willoughby Lake, Westmore, Vermont. Picture: Jay.