If you are Duck poor and havent found any good numbers I suggest you pack up your stuff and head to Mile Marker 81 on route 29 along the Big Mo. River near Modale, in fact get off at Modale west of the over pass about 100ft and watch the skies from the west, South West direction. You will see them all get up from about 4 to 5:20.
Don't move because they are coming to your parked location off the road just south of you about a 1/4 mile , maybe 1/2 mile. It is 1 hell of a mass of ducks folks and they are coming off of the river and the Desoto Refuge area and other water holes out in the flooded Flood plain.
Get out, do some door pounding and get some fields because you will kill a pile of them. No Joke. Have fun and Good luck.