Source: http://www.iowadnr.com
Each year the Iowa Department of Natural Resources (IDNR) uses a roadside survey to assess its upland game populations. The August Roadside Survey, as it is called, is conducted on sunny calm, mornings, with a heavy dew on the grass, between August 1st-15th of each year. Most upland wildlife, particularly pheasants, hate to be wet. On mornings with a heavy dew, hen pheasants bring their broods to the roadsides to dry off before they begin feeding. This natural tendency allows the birds to be counted and reproduction can be evaluated by counting the number of broods seen and their size. Survey routes are 30 miles long and are entirely on gravel roads. When conditions are favorable, Iowa DNR biologists and conservation officers drive their assigned routes, at 10-15 mph, and count all the pheasants, quail, partridge, rabbits, and jackrabbits seen. In all, there are 210-30 mile routes driven (6,300 miles) every August to assess Iowa’s upland game populations. Most counties have 2 routes, and the information from all of these routes is condensed to produce Iowa’s small game distribution map.
To see the 2005 information on ring-necked pheasants, along with comparisons to the previous year's survey click here.
The full 11-page 2005 August Roadside Survey Report is also provided here in PDF format (742k) for interested individuals who would like to see more detailed and long-term trend information.
To view this file you must have Adobe Acrobat Reader installed on your computer. Use the button below to obtain a free download of the latest version of the Acrobat Reader from Adobe.
Iowa Small Game Distribution Maps
These Iowa maps are based on August Roadside Survey data and are intended to be indicators of very general density of animals. There can be areas of "poor" density in the "good" areas and vice versa.

August Roadside Survey Data
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August Roadside Survey numbers indicate the average number of animals counted on 30 mile routes in each region (e.g., the northwest region counted an average of 63.5 pheasants on 30 mile survey routes in 2005). Percentage information represents the increase or decrease in the 2005 counts from 2004 counts. Counts are overall averages for each region and represent the overall abundance of game in each region. There can be areas of low game abundance in regions with “high” counts and areas of high game abundance in regions with “poor” counts.

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