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

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adult May
adult June
adult July
adult Aug
adult Sept
adult Oct
adult Nov
adult Dec

Ring-billed Gull delawarensis BLUE TAG adult, November 12 2011, Monroe Harbor. Chicago, IL. Picture: Amar Ayyash.

See Amar's blog.

The tag on the right wing was missing. This individual could have been a hatch-year bird when it was tagged or an adult. The swollen left tibia and notably short legs make for a somewhat abnormal looking Ring-billed.

below: delawarensis 0604-99926 adult, November 02 2010, Montrose Beach, IL. Picture: Amar Ayyash.

This individual had its eggs oiled at the Dime Pier colony (directly south of Navy Pier).