Saw a bird the other day while driving?

I saw this bird the other day while driving and I have never seen one like it before. I cannot find a picture like it and of course I was driving so I couldn t take a picture.

I live in Northwestern Illinois. The bird was large and brown/tan. It looked like a cross between a goose, a heron, and a giant flighted roadrunner.

It was long necked like a goose or heron - but had a beak that was like a heron s but shorter and was not colored like either. It ran before taking flight and it looked like it had feet similar to a roadrunners - not webbed but taloned.