Figured them out today, via persistence.
Saw 0 birds at the first field. Saw 0 birds at the second field. Saw 0 birds at the third field (a mile long draw, up and back).
Fourth field; Gunner goes on point and around 20 birds flush. Two shots, two down. Knew at least 6-8 more roosters were in the bunch so I felt comfortable taking one more.
Less than 30 seconds after we started working them, Gunner goes on point and .... BANG! ... BANG! ... missed! Couldn't believe it. Worked edges back to the truck and got 2 more hens and the final rooster up. Didn't miss this one, which happened to be a longer and more difficult shot. Figures.
Anyhow, just Gunner and me hunting today, so we were done with our 3. Nice day.