Blue wings blow through quickly. It doesn't matter how early you see them, there are always more behind them. The last week of the early season last year we had tremendous numbers up around me, and every one was talking up that all the birds had already been through, Louisiana and Texas were full of em. We killed a bunch of green wings the early season opener last year. Blue Wing Teal migrations aren't affected by the weather as much as other species, they are more of a calendar migrator and when early season roles around, they are pushin through. I'm on the river every day in August and every year, the first bluewings show up the second week of August like clockwork.
On another note, I saw the most geese I've seen congregated in one place that I have seen all summer last night. There were 53 on a sandbar, going to be about the most pathetic early season we've had in our parts for a while.