delawarensis Ring-billed Gull(last update:
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Coordinators: 1cy June 2cy Jan 3cy Jan adult Jan |
Ring-billed Gull delawarensis adult, March 09 2014, Chicago, IL. Picture: Amar Ayyash.Returning to the Great Lakes district last week, some 250 littered the beach at Whiting, all mostly adults with only one 1st cycle and a handful of 2nd cycles. Compare this to just 50 reported the day before. Ring-billed Gull is found in northern Illinois year-round, but decreases in the winter when, presumably, the breeding residents move south and are replaced by populations from northern latitudes. It's not unusual to only see 15-20 Ring-billeds in an entire day of winter gulling at some sites, with 30-50 being average. |