BirdCast, the online migration tool, is showing a big push of birds on the night of September 14 and 15. This coincides with a cold front passage late in the day on September 14. There should be a lot of bird activity at Montrose on September 15, so if you can get there by all means do. I’ve included a link to the BirdCast main page below. BirdCast is a free and easy to use resource.
The Montrose Birding Blog
Bird and Nature Sightings from Montrose Point in Chicago
White-winged Scoters