Dad and I hunted NE of Willows California (2 hours N of Sacramento) on a combined irrigated/dry alfalfa field. There was a disced field that was sunflowers to the south and an orchard to the NE. There were more dove this year than I've seen in at least 10 years. I arrived on the field at 6:15 and was done by 7:15, Dad took a little longer and was done by 8. 20 between him and I. I shot a bit less than a box of shells.
Second day was a little tougher, it had cooled down a bit, and the birds had shifted. Dad managed to get his limit by 8:30a, I took a little longer and was done at 9:30a.
This was by far the best hunt we've had in years. The weather held out and it was in the 90's to low 100's and humid thus keeping the birds hanging around. In recent years it always snapped cold the day before sending the birds south. Unfortunately Dove hunting i all about location. If you can be on a cut grain field (sunflower, Safflower, etc) it tends to be pretty good. If you have trees and water, that will make things better in the afternoon. If you have access to all of this, that tends to make it a good hunt. if you don't have all that, it gets difficult to bring em in.