ID Help Please

I found this bird after hearing a henslows sparrow in the same general vicinity in a large meadow in suburban Chicago. It was the only one visibly present. I think it might be a juvenile bobolink but they usually travel in large groups this time of year. Any assistance would be greatly appreciated.

Thanks

Rick

A moulting/nonbreeding Bobolink (Dolichonyx oryzivorus)

Yes, I agree with Richard. The bill shape and head pattern look right, as does the habitat.