Here are the 2 likely scenarios.
1st is that there will be a significant decrease in your area of migrating birds. Remember the overall bird count is lower than a year go. But the real point is the droughts north of you. It is very dry in the western plains again this year. Thus many ducks are way east where it is wetter. An example is AB and MB--worlds apart in precipataion. AB is dry with drought while MB is way too wet. The fowl go where the water is plain and simple.
2nd is that there is very little migration yet. In W MN it was a very poor weekend 5 birds for 17 guys on Sat from 1 report. They just are no new birds from up north yet here much less 400 miles SW of there. But watch this week-as there is to be a major cool down in the northern areas-highs in the 40s, that'll move some birds I bet, but where they migrate to is another story in itself....