From all of the reports I've gathered and a couple phone calls, my best guess is this:
There's still a good amount of birds in Texas holding for more favorable migrating conditions...there also appears to be a lot of birds stacked in S. Kansas, also waiting to move...a guy who I hunted with last fall just got back from Arkansas and there's quite a few and really bunched up (shot 70 in 3 days)....Illinois still has a lot holding, but I think they've been there awhile....and a guy at waterfowler keeps claiming there's a good amount moving through the rainwater basin in NE??? I didn't know if they were even pumping yet or at all, so I'll pass that off until I can confirm it.
Conflicting forecasts the next 10 days, so it's hard to tell how much ground the birds will have to work with everything frozen for 3 1/2 states south.
Still waiting...