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Mallard Migration Status
Every week, over 100 biologists, wildlife managers and other experts rank the progress of mallard migration in their areas. We compile their data to bring you a map showing the status of the mallard migration. Limitations
These rankings do not depict mallard abundance; they indicate the relative progression of the fall migration. Estimated peak numbers of mallards may be lower or higher than average numbers during previous years due to annual variations in local wetland and environmental conditions. As a result, a dark color does not necessarily mean that lots of mallards are present in that region
These maps depict real time estimates of migration without the benefit of waiting until the completion of migration before providing assessments. Revised maps will be posted in February. Some variation in results may also occur depending on the number of experts reporting for a given week.
Mallard Migration Observation Network
The mallard migration observation network was established as part of a broader project to use GPS satellite telemetry to better understand mallard movements, distribution, and habitat use. The rankings provided by participants this fall will be compared with the locations of mallards marked with GPS satellite telemetry units to help determine if mallards carrying the additional weight of a transmitter display normal migration behavior.
Re: Iowa Reports « Thread Started on Oct 19, 2009, 8:33am »
Weather and migrations during the survey period: October 15, 2009 Weather this past week was unseasonably cold and wet. High temps in N Iowa did not exceed 45, except on Sunday. Normal highs would be near 60. Hunters were greeted with good waterfowling weather on the Oct. 10 opener; temperatures in the mid 20's and winds from the northwest winds at 15 mph. Sunday's temps were as low as 20 in parts of north Iowa and hunters had to break ice on small wetlands. Hunting pressure was lower than usual and success was highly variable; limits on some areas while hunters averaged a duck or 2 on others. Green-winged teal, gadwall, mallards, and shovelers dominated the bag. Cold temperatures persisted through the week. Temps dipped to the lower 20's in north Iowa on the 13th and ice covered small and shallow wetlands. On Wednesday, parts of north Iowa accumulated up to 2 inches of snow. The cold weather and ice appeared to push wood ducks and teal south, but also brought an influx of diving ducks. This was most notable on the Upper Mississippi River where diving ducks increased from near zero to 156,000 (120,000 cans) in a week. South Zone areas also picked up ducks this past week, which should bode well for the opener in this weekend.
Re: Iowa Reports « Reply #1 on Nov 7, 2009, 9:01am »
Weather and migrations during the survey period: November 5, 2009 The rains finally ended on Oct. 31 and strong WNW winds blew a few ducks into the state, mostly divers (ring-necked ducks, redheads, and canvasback) and mid-season migrants (green-wings, gadwalls, and wigeon). Canvasback numbers on the Mississippi River jumped another 100,000 to 400,000, while scaup numbers increased from 90,000 to 125,000. The mild weather that settled in for most of the past week did not appear to be conducive to substantial migrations, even though the wind blew from the NW on Nov 2 and Nov. 4. It is unclear if the drop in ducks seen onsome northern areas is the result of birds exiting the region or just a redistribution of the birds onto the temporary wetland habitat created by the recent heavy rains. Many managed areas had excessively high water levels last week, but water levels have been brought back to near normal levels on most areas thanks to the past week of dry weather. Reports of hunting success over the past week have been highly variable