I got to Chicago's southernmost lakefront park, Calumet Park, a little before noon and walked out to the fishing pier. Much to my delight, the gulls came in with haste today. When not on one of the two beaches, the larger gulls usually come in from the breakwall out on the lake in Indiana waters, or south of the park, from Hammond:
|1st cycle Thayer's Gull (left) with adult Ring-billed Gull (right). Calumet Park, Chicago IL; 5 NOV 2011|
|The dark outer webs and paler inner webs to the primaries eliminate American Herring.|
Note the juvenile scapulars with pale edges. This species has a somewhat frosty look compared to Herring.
The presence of this species is almost a requisite for finding some of the rare, small gulls. Bonaparte's do not winter on Lake Michigan.
|Adult Bonaparte's Gull. Calumet Park, Chicago IL; 5 NOV 2011.|
This contingent of BOGUs seemed perfectly comfortable around the larger gulls. In fact, they seemed to prefer the company of the American Herrings over Ring-billeds:
|Who says BOGUs don't take bread?!|