When mulling over what to write about today, I first thought the story that broke about the person in Norway who killed five people with a bow and arrow would provide a good starting point.1 No doubt the millions of gun enthusiasts in this country will use that as an excuse to enact more laws to allow more people to carry weapons. You can just hear it now, “If more people in Norway were allowed to carry weapons, they would have shot that archer dead and saved lives.” Of course, they would have overlooked or failed to mention the other article published yesterday about how more and more weapons are being discovered at TSA checkpoints. So far this year, TSA has found over 3,000 loaded – repeat ‘loaded’ – weapons that people have tried to carry on to aircraft in this country!!2 That thought will be of great comfort when I fly back to New York for Thanksgiving.
However, sometimes I just get tired of writing about all of the insanity going on so I decided to look a little more into a ‘threat’ that is a little closer to home – black bears. There have been quite a few sightings of black bears around Bozeman this fall and, for the last few days, there has been a large black bear roaming around our neighborhood getting into mischief. On Sunday, there was fresh bear scat in my back yard near my apple trees. Yesterday morning there were bear tracks across the front of my lawn and even fresher tracks across my neighbor’s lawn. I got curious and decided to look into black bears a bit more.
It turns out that Montana has about 15,000 black bears. Black bears are omnivore’s and tend to be solitary, except when a sow is raising her cubs. They are very accomplished tree climbers. They reach maturity at about 3 years of age and can live up to 25 years in the wild.
What we are seeing now with all of these bears around is a phase called hyperphagia in which they are eating just about anything in order to rapidly increase weight to get ready for winter. We all have used the term ‘hibernation’ when we refer to bears sleeping during the winter but it turns out that term is incorrect. Bears do not really ‘hibernate’ per se. They enter a state that most experts have come to call torpor.3,4
Animals such as chipmunks truly hibernate and when they are in this state, their body temperature drops to close to freezing but they still waken every few days to warm up their body temperature, eat some stored food and eliminate bodily waste. Bears, on the other hand, do not have such a dramatic drop in body temperature – perhaps 10 degrees, but are able to significantly slow their metabolism. In addition, and most interesting, is the fact that during this period of torpor, which can last 5 to 7 months, depending upon the winter, the bears do not eat, drink, urinate or defecate! They may wake up a little from time to time but, by and large, they sleep. [From someone who often has to get up in the middle of the night to go to the bathroom, the concept of not peeing for 5 months is astounding!]
Mothers have their cubs in the winter and will wake up occasionally to check on them but she sleeps most of the time. The cubs do not enter this state of torpor but snuggle up and nurse off of the mother until spring.
There is some speculation that because of the drought this year, the bears are roaming closer to the city because they were having trouble find enough food elsewhere to fatten up for the winter. In any case, we seem to have a larger than normal population of black bears roaming around the area in search of food. Presumably they will all get settled in for the winter in the next 3 or 4 weeks we can all get back to ‘normal.’
I guess that’s about all for black bears. Just remember, technically, bears don’t hibernate – but they can sleep for five months without eating, drinking, urinating or defecating!! I think for us humans that is called death!!
Since facts seem to be few and far between these days, I thought I would throw out a couple more factoids about Montana wildlife. First of all, there are no buffalo in North America, except in zoos. The large furry beasts that once roamed the American plains and occasionally make the news for charging idiotic tourists in Yellowstone Park, are not buffalo, they are bison. Buffalo are indigenous to Southeast Asia (water buffalo) and Africa (Cape buffalo).
Also, the cute little pronghorn ‘antelope’ are not antelope at all. They are simply pronghorns and are not at all related to antelopes in Africa.5 Interestingly, they are the fastest land mammal in North America.
The world is full of so many wonders it’s a shame we continue to squabble over things that, in the overall scheme of things, aren’t really that important after all.
So, the ‘take home lesson’ for today is just a few fun facts: bears do not hibernate; there are no buffalo in North America (except in zoos); pronghorn are not antelope, nor are they related to antelopes; and Joe Biden did, in fact, win the election!
- Norway attack: Several killed in suspected bow and arrow attack in Kongsberg – CNN
- Passengers are bringing a record number of guns to the airport, TSA says – CNNPolitics
- Do Black Bears Hibernate? – North American Bear CenterNorth American Bear Center
- Bear Hibernation – Why Do Bears Hibernate & How Do they Do it! (pestshero.com)
- Pronghorn Antelope | Sagebrush Ecosystem | U.S. Fish and Wildlife Service (fws.gov)