DNR releases pheasant indexPublished by on
ST. PAUL — A long winter followed by a cold, wet spring has contributed to a significant decrease in Minnesota’s pheasant population.
The Department of Natural Resources says Minnesota’s pheasant index declined 29 percent from 2012, reflecting trends seen in neighboring states. Minnesota’s 2013 pheasant index is 64 percent below the 10-year average and 72 percent below the long-term average. The DNR says habitat losses are the main reason for the long-term decline.
“Minnesota’s results reflect what we’re seeing in other states,” said Rachel Curtis, DNR wildlife research biologist. “South Dakota had a 64 percent decrease in its brood survey. North Dakota’s most-recent rooster crowing count is down 11 percent from last year. And Iowa reported a 19 percent decrease in its August roadside count.”
Minnesota hunters still are expected to harvest about 246,000 roosters this fall. That’s down 44,000 from last year and less than half the number taken during the 2005 through 2008 seasons when pheasant hunting was exceptionally good. The pheasant population estimate is part of the DNR’s annual August roadside wildlife survey, which monitors annual changes and long-term population trends.
he highest pheasant counts were in the southwest region, where observers reported 51 birds per 100 miles of survey driven. Hunters should find good harvest opportunities in west-central, east-central and south-central Minnesota.
“Pheasant populations respond to habitat abundance and changes in weather,” Curtis said. “The steady downward trend in Minnesota’s pheasant population during the past several years is primarily due to habitat loss. Weather has caused minor fluctuations.”
The most important habitat for pheasants is grassland that remains undisturbed during the nesting season. Protected grasslands account for about 6 percent of the state’s pheasant range. Farmland retirement programs such as Conservation Reserve Program (CRP), Conservation Reserve Enhancement Program, Reinvest in Minnesota and Wetlands Reserve Program make up the largest portion of protected grasslands in the state.
High land rental rates and competing uses for farmland diminish the economic attractiveness of farmland conservation programs. CRP enrollment declined by 63,700 acres in Minnesota’s pheasant range over the last year and contracts for nearly 400,000 acres of statewide CRP lands are scheduled to expire during the next 3 years. If not re-enrolled, this would reduce CRP acres in Minnesota by 30 percent.
To help offset continued habitat losses caused by reductions in conservation set-aside acreage, the DNR has accelerated acquisition of wildlife management areas in the farmland region of Minnesota. The U.S Fish and Wildlife Service also acquires and protects habitat across the state. In addition, the DNR supports habitat conservation on private lands by working with a variety of partners in the Farm Bill Assistance Partnership and Working Lands Initiative.
High spring precipitation and below average temperatures hurt nesting this year. This year’s average hatch date was delayed to June 20, which is 11 days later than the 10-year average of June 9.
Although fewer broods were seen, brood size was larger than last year and comparable to the long-term average. Actual reproduction rates may be higher than the survey suggests. Hens that were successful nesting later in the season tend to be underrepresented in roadside data and it is possible that hens were still nesting or in heavier cover with young chicks during the survey period.
The pheasant population estimate is part of the DNR’s annual August roadside wildlife survey, which began in 1955. DNR conservation officers and wildlife managers in the farmland region of Minnesota conduct the survey during the first half of August. This year’s survey consisted of 171 routes, each 25 miles long, with 152 routes located in the ring-necked pheasant range.
Observers drive each route in early morning and record the number and species of wildlife they see. The data provide an index of relative abundance and are used to monitor annual changes and long-term population trends of pheasants, gray (Hungarian) partridge, cottontail rabbits, white-tailed jackrabbits, mourning doves and other wildlife.
The gray partridge index also decreased from last year and remained below the 10-year average. The cottontail rabbit index increased from last year but stayed below the 10-year and long-term average. The jackrabbit index was 87 percent below the long-term average. Finally, the mourning dove index was 20 percent below last year and lower than the 10-year and long-term averages.