Now, as I mentioned at the onset of this semester, I am writing about the dark side of squirrels—the aspects of squirrels that are not necessarily “ideal” so to speak. And, that’s exactly what I have been doing, and am continuing to do… I think. So,
Ready or not, here they come.
Well, technically, I guess they’re already here. Or, there I should say, considering our current location.
Sorry, this all probably sounds really confusing.
What I’m trying to say here is,
Squirrels are an invasive species.
There I said it.
Now before you get your furry tails in a twist, let me explain. The squirrels that we see scampering around campus each and every day (the eastern grey squirrel) is not an invasive species… not HERE at least. But, in other portions of the world, that unfortunately is not the case.
So, let’s begin with where grey squirrels are indeed native. Obviously, they are native here, in Pennsylvania, along with all other states on the rights side of the country. Basically, if you drew a vertical line right down the middle of the country and selected all states to the right of that line, that is where grey squirrels are native. Grey squirrels are also natively found in portions of England, Ireland, Northern Italy, South Africa, and Western Canada.
So, where are these fluffy animals creating problems as invasive species?
Residents of both the state of California and Great Britain would be happy to tell you.
Not only are the fur balls destructive towards the tree populations in these areas (they like to chew on tree bark—can’t blame them,) they are also having a quite literal deadly impact on another animal species in these areas… the red squirrel. That’s right, grey squirrels are actually killing off their red-headed family members. I mean, I’ve heard some bad “ginger” jokes but this is just taking it a bit too far if you ask me.Here is a visual match-up. The grey squirrel does actually look a lot more menacing.
Now it is important to note that none of this death or destruction is intentional. You see, grey squirrels have been carrying something called “squirrel pox” which are easily spread to their red-headed brothers. The grey squirrels themselves, however, seem to actually be completely immune to the illness, making the red squirrels in California and Britain completely vulnerable. According to TIME magazine, the grey squirrel was ranked the 5th most invasive species of all time, due to its spreading of disease and the fact that grey squirrels consume 7 times as much food as their red-headed kin, creating an unsustainable environment for the squirrel population in these areas. In the TIME magazine lineup, the squirrel only ranked behind the rapidly growing Kudzu plant, the cane toad, rabbits, and Asian carp.
It is really quite sad to hear about squirrels fighting amongst each other like this. It is my hope that one day, all squirrels can live in harmony. That goes for humans too I suppose.
http://content.time.com/time/specials/packages/article/0,28804,1958657_1958656_1958637,00.html