delawarensis Ring-billed Gull

(last update: 10-03-2014 )

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 501 3rd cycle (3CY), December 15 2012, Lake Chauncy, Westboro WMA, MA. Picture: Steve Arena.

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Banded with florescent orange wing-tag 501, red leg band 066 and metal Fed band #0994-04264, captured as 1st cycle, on October 29 2010 at Walmart, Northborough MA.

After the second pre-basic moult birds will be in adult basic plumage. However, these 3rd cycle birds can be interesting, and in this bird note the relatively dark iris (last image, and compare to other bird).