Suburbs = old growth forest, as far as owls are concerned

Behold the majestic Strix varia — otherwise known as the Barred Owl. Possessed of a three-and-a-half-foot wingspan and a particularly gnarly hoot, the Barred Owl historically was known to thrive only in old-growth forests. Why? Because it hunts by sitting on a branch and waiting for something to move, a technique that doesn’t work in a younger forest with smaller trees and dense, tall underbrush. It craves the cathedral-like openness of superold trees. And so back in the 60s and 70s, ornithologists feared that as old-growth forests across the US were cut down, the Barred Owl would eventually and tragically vanish.

But that hasn’t happened. The Barred Owl is thriving — because, interestingly, it has migrated to urban and suburban settings. Rob Bierregaard, an ornithologist at the University of North Carolina, had noticed that the suburbs of Charlotte were home to tons of Barred Owls. So he began a six-year-long study to ask the question: Why do Barred Owls thrive in the ‘burbs?

The answer, it turns out, is delightfully ironic: As far as the owls are concerned, the suburbs actually resemble old-growth forest. As Bierregaard puts it in this press release:

“When you look at suburban Charlotte, what do we have? We’ve got giant old willow oak trees with plenty of holes in them and we’ve got mowed lawns and azalea bushes, which is a very open understory, so they can see a long way. The habitat is an ‘uber’ old growth forest for owls because the understory is so open and there are plenty of birdfeeders to attract prey.”

Apparently, the only serious hazard the Charlotte owls face is the same one that threatens suburban humans: Automobiles. Collisions with cars are the leading cause of owl death. (Though it’s possible that cars are also helping to cull the owls, preventing the population from exploding and starving itself.)


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I'm Clive Thompson, a writer on science, technology, and culture. This blog collects bits of offbeat research I'm running into, and musings thereon.

Currently, I'm a contributing writer for the New York Times Magazine and a columnist for Wired magazine. I also write for Fast Company and Wired magazine's web site, among other places. Email or AOL IM me (pomeranian99) to say hi or send in something strange!

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January 31, 2010 » 07:29 PM
V. A. To me death seems to be an evil.
M. What, to those who are al­ready dead? or to those who must die?
A. To both.
M. It is a mis­ery, then, be­cause an evil?
A. Cer­tain­ly.
M. Then those who have al­ready died, and those who have still got to die, are both mis­er­able?
A. So it ap­pears to me.
M. Then all are mis­er­able?
A. Ev­ery one.

January 24, 2010 » 03:22 PM

One of the more interesting trends is family, which came in at number five. Specifically, discussion about family, moms, dads, daughters, etc. jumped during 2009. With Facebook users getting older, this isn’t a big surprise. However, the fact that the mention of “kids” jumped by a factor of five this year is rather dramatic. It’s tough to know what this means, though. (via Facebook Unveils Most-Mentioned Topics of 2009

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January 15, 2010 » 01:36 PM

BEYOND AWESOME. They are announcing a recall of the Plush Uterus “due to a potential choking hazard for children”. To apply for it, “Please send an email to the address below with the subject line, ‘UTERUS OPT OUT’”.

January 14, 2010 » 10:04 PM

“To order, please TYPE “YES” IN CHECKBOX BELOW TO AGREE YOU UNDERSTAND THIS PLUSH MUST BE KEPT AWAY FROM KIDS (it is a sex organ, after all). If it is not checked, WE WILL NOT SEND THE UTERUS.” (via @ibogost)

January 11, 2010 » 01:45 PM

I watched Space: 1999 back in the day, but I swear to god I do not remember this scene.

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