Showing posts with label March. Show all posts
Showing posts with label March. Show all posts

Friday, March 14, 2014

Wisconsin Department of Natural Resources Outdoor Report summary for March 13, 2014

Snow Cat
Snow Cat (Photo credit: clickclique)
Warm weather reduces snow cover in the south, deep snow persists in the north
Some very warm weather early in the week, reaching into the 50s statewide, has taken a toll on winter sports conditions, especially in the southern half of the state. The warm weather melted a lot of snow in a hurry leaving a muddy mess in far southern areas and water standing in many fields and yards. Many southern facing slopes in the south are now snow free, much to the delight of wildlife.
In the north, however, while snow settled some with the warm up, the deep snow persists. Snowmobile trails remain open and are still being reported as good to very good in many northern counties on the Department of Tourism's Snow Conditions Report. Most state park and forest properties are reporting that cross-country ski grooming is likely over for the season, unless the state receives another big snowfall. Trails in the south are generally in poor condition, and while trails in the north are snow-covered, they have been icy in the mornings and soft and slushy as temperatures warm throughout the day.
State wildlife officials continue to monitor the harsh winter's impact on deer and turkey. They continue to ask the public's help in reporting any dead deer or turkeys to local wildlife biologists. And responding to many hunters' concerns over turkey populations in the north, wildlife officials have announced that they will reduce the number of over-the-counter spring turkey permits available in some northern units.
Northern Wisconsin lakes are still solidly locked in ice, with 22 to 30 inches on most lakes with layers of slush on top, making travel very difficult. Lakes in southern Wisconsin have just begun to show signs of early break-up with some landings and shorelines having open water, especially near inlets and outlets. Wardens are cautioning people against driving any vehicles on river systems as they are also beginning to open up.
Ice fishing pressure has been pretty non-existent in the north, but this week's warm weather did trigger some good panfish action on southern and central Wisconsin lakes. The milder weather brought out more anglers last weekend on Green Bay, where anglers continue to fish though deep ice with success for whitefish and northern pike reported along the east and west shore. There is some more open water in southeastern Lake Michigan harbors, but most are still locked in ice and anglers continue to catch brown and rainbow trout through the ice.
Raccoon, skunk, muskrat, mink, and opossum activity has increased as temperatures are increasing and snow is receding. River otter sign along creeks and streams may be more evident this time of year as male otters increase their movements during the March to April breeding season. Fox and gray squirrels are feeding furiously on nuts and seeds that have remained buried all winter under snow and ice, and males are actively pursuing females.
The spring bird migration is off to a tempered start with arrival of small numbers of sandhill cranes, red-winged blackbirds, and American robins in the south. Waterfowl rank among the earliest migrants and a good diversity of birds are now on the move. However, this winter's extensive ice cover continues to take a toll on many diving ducks as numerous dead birds are showing up along the Lake Michigan shoreline as ice recedes.

Wednesday, April 25, 2012

Fawn Under a tree
(Photo credit: Wikipedia)
MADISON – Dozens of volunteers assisted state wildlife researchers in capturing and placing radio-collars on 132 yearling and adult deer in January, February and March. Now the call is going out again for volunteers to help locate fawns born to does that were fitted with implant radio transmitters designed to signal when fawns have been born in mid- to late May.
“With the whitetail birthing season just around the corner, volunteers are again needed to sweep the woods looking for the newborns,” said Chris Jacques, Department of Natural Resources research scientist. “When located, fawns will be fitted with expandable radio collars so we can follow them through their first year of life to determine causes of death, whether it be due to nutrition, environment, vehicle, hunters or predators. This is real applied research and last year’s volunteers found the work rewarding.”

Some hunters have questioned assumptions about fawn recruitment used by wildlife biologists for estimating deer populations. Recruitment is the net addition of new fawns to a population each year and is an important input in estimating deer population numbers. At the end of this three-year effort to monitor fawns, researchers hope to fine tune their inputs to population estimates based on real-world data collected in this research effort.
Volunteers will be assigned to search teams working in the vicinity of Shiocton in Shawano County and Winter in Sawyer County. When transmitters have been expelled (presumably when a fawn has been born), a search team will form a line and comb the woods, somewhat similar to a deer drive, in search of bedded fawns. Opportunistic searching in high quality fawning habitats also will be conducted across both study areas. Captured newborns will be fitted with a radio collar of their own and left for the doe to raise normally.
If a fawn dies, the collar will emit a unique signal that researchers will again use to locate the animal to determine cause of death. The collars are designed to expand as the deer grows and eventually drop off as the animal approaches its first birthday.
Impact of predators on deer populations of special interest to hunters
“Determining causes of death in fawns is vital to the accuracy of our deer population estimates,” said Jacques. “Of special interest is the impact of predators on fawn deaths. We have a suite of predators in Wisconsin, including black bears, bobcats, coyotes, and gray wolves, that may have some impact on yearly fawn production. What we are less certain of are the relative roles that each of these predators may play on fawn recruitment over the course of an entire year.”
During 2011, thanks to the help of volunteers across the state, researchers enjoyed tremendous success capturing fawns. A total of 104 fawns, including 68 (48 radio collared, 20 ear-tagged) in the Shawano area and 36 (30 radio collared, six ear-tagged) in the Winter area, were captured.
“Though we have collected just one year of field data, preliminary evidence indicates that predation (primarily by black bears and bobcats) is likely having some measurable impact on fawn survival across northern Wisconsin, having accounted for 14 of 22 (64 percent) deaths during the first month of life,” according to Jacques. “The predation impact across east central Wisconsin appears to be considerably lower, having accounted for just six of 18 (33 percent) recorded fawn deaths. Vehicle collisions and fawn abandonment appear to be primary causes of death, accounting for half of all recorded fawn deaths in the eastern farmland region. Fawn survival through December 2011 in the northern and east central study areas was 27 and 63 percent, respectively, indicating that the northern forest region is a much tougher place to scratch out a living for fawns than the eastern farmland region of Wisconsin.”
This work is possible only with the involvement and work of dozens of volunteers representing hunting groups such as the Wisconsin Conservation Congress, Safari Club International and Whitetails Unlimited, the University of Wisconsin- Madison and UW-Stevens Point, the AFL-CIO Union Sportsmans Alliance, and hundreds of Wisconsin citizens.
“Anyone who has looked for newborn fawns or been startled to discover a fawn lying motionless in the forest or field next to them knows what a challenge it is to find them,” says Jacques. “They have excellent natural camouflage and instinct to remain absolutely still when approached. The transmitters will give us a better idea of where they are but it will still take time on the ground to locate them.”
For more information and to sign up as a volunteer search Deer Research on the DNR website.