A New Year is upon us and my best to all.
Here in Northwestern Ontario, we had a very mild fall, up to December, when winter finally came. We now have close to 50 cm of snow on the ground and the temperature has been in the – 20 0C range for much of the past month, including today. No – 400 s, though, which can occur, and is something I really don’t like. Things just start not working and worse, start breaking, at that temperature.
The whitetail deer does around the house are still able to walk around in the snow without too much difficulty. The snow is not quite to their bellies, is light and there is no crust. The deer went into winter in good condition – courtesy of that mild autumn – and barring another big dump of snow soon – as well as a normal ‘end’ to winter around the first of April, should get through OK. A rule of thumb is 50 days of 50 cm of snow and there will be significant deer mortality. Not quite there yet and what is there can be expected to settle several centimeters over the next few days. No major snowfalls forecast for the immediate future.
The wolves have not been around for several days. However, where we went ice fishing for lake trout on New Year’s Day, we saw that there had been 4 or 5 of them out on the ice the previous night. Given where we were fishing isn’t all that far from home as the crow flies, that’s where the missing wolves might be. With deer numbers way down from previous years, this could be the winter that finally brings wolf numbers down, too.
It’s interesting that once the snow comes, the ruffed grouse seem to almost disappear. I suspect they feed voraciously on buds in tree tops (such as white birch) at dawn or dusk, fill up their crops and then spend days roosting in either the snow or thick conifers, until their food source is exhausted. Then the cycle is repeated. I recall one winter seeing where a grouse had plunged into the snow and stayed there for several days (I saw the plunge hole and recognized it for what it was). By week’s end, I thought maybe it had perished, but when I went to check, the bird burst out of the snow at my feet, startling me, of course, as they are wont to do.
It looks right now that most of Canada is experiencing cold and snow. Even Lala land in Vancouver, British Columbia, has snow and ice on the ground. Many Vancouverites are ill prepared for snow and cold and many don’t even own a snow shovel. I’m sure the carbon tax will help people cope.
There is no getting around the fact that winter is hard on wildlife. Of course, some species are adapted to it, but in areas with regular, harsh winters, the abundance and diversity of species is a pale shadow of what thrives in warmer climes. The winter of 2013-14 in much of the country, including where I live, was horrendously long, cold and snowy, and wreaked havoc on the local deer population. It didn’t do our struggling, reintroduced elk population any favours either. Pat Karns, a former and now departed wildlife biologist in Minnesota, once wrote a paper ‘Winter: the Grim Reaper’, outlining how winter, more than any other factor, was responsible for deer dynamics on northern ranges.
It’s a classic and a ‘must read’ for wildlife biologists and nature enthusiasts alike.