Missouri's Managed Duck Areas Averaged More Ducks per Hunter in Opening Week and Fewer After November

ISeason start

The opening seven days outperformed the remaining season across 14 of 16 areas

We separated the opening seven days in each area's reported season from the days that followed. The opening week's average was 2.36 ducks per hunter across 655 area-days. Later dates averaged 1.89 across 7,410 area-days. The same pattern appeared at 14 areas among the 16 with sufficient days in each group.

Several differences were substantial. Ten Mile Pond averaged 2.61 during opening week versus 1.45 afterward. Otter Slough's rate went from 3.13 at the start to 2.23 later. At Bob Brown the opening-week average of 3.61 led the table, compared with 2.74 afterward. The pattern also showed up at lower-performing areas. At Marais Temps Clair the opening average reached 1.34, about twice the 0.67 recorded afterward. The smallest decline belonged to Grand Pass among areas averaging more than 2 ducks per hunter. It averaged 2.94 during opening week versus 2.71 afterward. The two outliers were Columbia Bottom and Montrose.

IISame-area comparisons

November outperformed late December and January across 15 of 17 areas

Opening week gives us only a brief window. A wider comparison uses November and the period beginning December 16 and continuing through January. Season dates differ among Missouri's North, Middle and South zones. A statewide calendar comparison therefore combines areas with different schedules. Matching an area against its own results avoids that mix.

November came out ahead at 15 sites out of the 17 that supplied at least 20 days for each period. Grand Pass averaged 3.32 during November versus 2.11 over the December 16 to January period. Bob Brown averaged 3.23 versus 1.78. At Nodaway Valley the comparison was 2.61 versus 1.36. Duck Creek's rate dropped from 2.07 to 1.15. Only narrow margins separated the exceptions at Montrose and Settle's Ford. Their November averages were 1.59 and 0.80 versus 1.77 and 1.05 for the later stretch.

Pooling reports by calendar date reveals a similar decline. November's opening half produced 2.40 ducks per hunter on average compared with 1.38 during January's opening half. Each half-month period from early November to early January posted a lower rate than its predecessor.

Late October's average was 2.66, based on 177 area-days supplied by a few places that opened early. January's later half rose to 1.62, with just 4 areas submitting reports then. The calendar's edges draw on far fewer reported days than its central stretch.

IIIBirds on the area

The largest estimates did not match the strongest shooting

Most reports issued each day include MDC's estimate of how many ducks are using that area. We ranked days within each area by that estimate and divided them into thirds before pooling matching thirds across areas. The middle third produced an average of 2.05 ducks per hunter. For the upper third the average was 1.93 compared with 1.77 for the lower third.

The largest duck estimates therefore did not coincide with the strongest shooting. These records cannot explain why days in the highest third trailed those in the middle third. We will not supply an explanation by guessing. Read this as a description and avoid chasing the largest tally on the board. Estimates often remain unchanged for several consecutive days, so those days do not provide independent samples. This comparison covers 6,948 area-days. We excluded 1,089 days because their duck count was either missing or zero. We also excluded 28 days reported by Little River and by Settle's Ford because neither area supplied enough counted days to form thirds.

IVLimits of these records

Per-hunter harvest is only part of the picture

To calculate the rate, we divide reported duck totals by reported hunter totals. The figure averages group results across trips and offers no certainty about one hunter's morning. An area's opening week starts with its first report for that season. That report usually corresponds to opening day, although late reporting would move the window. The reports cannot identify what causes the rate to decline over a season. February falls outside their coverage.

Departure timing is the subject of when ducks leave in relation to cold and snow. The analysis here instead tracks per-hunter duck harvest at managed areas in Missouri. Those are different questions.

Data cleanup came before the analysis. The source contained 8,161 rows. We removed 55 that duplicated an area ID and a date. Using area-name matches allowed us to retain 819 out of 850 rows that lacked an area ID. We removed 31 of those rows as duplicates and another 10 because no hunter count was available.

VOur takeaway

Put your prime dates early

For these managed areas our rule is to reserve top-choice dates for opening week and November. Hunters still kill ducks during late December and January. Even so, those same areas recorded lower per-hunter averages during that stretch at 15 sites out of 17. When you have only a handful of hunts on managed areas, schedule them toward the start. Keep late-season dates for trips that cannot be shifted. A report's largest duck count of the year is no reason by itself to choose that day.