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
3cy Oct
3cy Nov
3cy 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

Ring-billed Gull delawarensis 70A adult, September 12 2015, Sandy Point State Reservation, Ipswich, Essex County, Massachusetts. Picture: Steve Arena.

Please visit Steve's Flick photostream excellent website for many more images! Blue 70A was banded as an adult in winter (hence no provenance on origin or exact age), on November 20 2013 at Vandenburg Esplanade Park, Middlesex County, Massachusetts USA.

Last stage of the complete moult: no old primaries left, P7 fully grown.