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News Releases Theres nothing we can do about the weather but adequate grassland for nesting habitat is a concern, Haroldson said. Many Conservation Reserve Program (CRP) acres that once provided that habitat have been or are being returned to production. That may have more of an impact on the population than this winters weather. Grouse In northeastern Minnesota, an icy crust has formed over snow, creating conditions that may be forcing grouse to roost in and under short, close-clumped conifer trees rather than burrowing into their preferred roosts in six to 10 inches of fluffy snow. Grouse are uniquely adapted to survive Minnesota winters. Roosting in deep, fluffy snow for up to 20 hours at a time insulates the birds from cold, protects them from the wind and reduces their exposure to predators. When grouse cant burrow into the snow to roost, they often select roost sites on the lower branches of short, close-clumped stands of spruce and balsam fir, said Jeff Lightfoot, DNR northeast region wildlife manager. These roosts make it more difficult for grouse to retain radiant heat, and can increase exposure to predators. Wildlife biologists believe that those ruffed grouse able to snow roost near deciduous trees - such as aspen - that provide high-quality winter food, have a greater chance of surviving. Birds that are unable to snow roost use more energy maintaining body heat and out of necessity are out in the open feeding more often. Lightfoot said it is tough to tell what effect crusted snow and other environmental conditions have on our ruffed grouse because so many different factors influence their population throughout the year. Annual counts of drumming males throughout the states forested regions suggest they are at or near their approximate 10-year peak in population cycle. Our drumming counts this spring will provide us with a good idea of the status of the population after this winters icy snows, Lightfoot said. Turkeys Minnesotas wild turkeys will fare better than pheasants this winter because they are larger birds and their primary habitat is wooded areas, which provide better shelter. Like pheasants, turkeys are ground feeders. But their larger size helps them cope better in deep snow. Turkeys also will follow deer trails and will scratch the ground to uncover food sources. Deer This winters weather is expected to have a negligible impact on northern deer populations. The Winter Severity Index (WSI), which is used to measure winters impact on deer, is well below moderate levels. WSI values vary greatly across northern Minnesota but winters have generally been considered mild to moderate since the severe winters of 1995-96, 1996-97 and the 2008 winter, which was severe in places. This will be a mild winter for deer in most of Minnesota, just so we dont get deep snow or long cold snaps through mid- to late March, said Lou Cornicelli, DNR big game program coordinator. |