It appears that you are currently using Ad Blocking software. What are the consequences? Click here to learn more.
Fitness and Photography for Fun - A blog on staying fit by hiking and doing photography by David Mendosa

A Great Horned Owl‏

February 4th, 2011 · 3 Comments

Print This Post Print This Post

Since today started out sunny and the prediction was for snow, I played hooky. I skipped my indoor Tai Chi class in favor of outdoor nature photography.

The thought of seeing bald eagles at Boulder Reservoir again pulled me out of my warm apartment. But when I got there just after 8, I was surprised and disappointed to see the gate closed (checking the city’s website later taught me that they don’t open the gate until 9). I could have hiked in from the gate. But when I used my binoculars to scan the trees by the Res, I didn’t see them.

Instead, I went on to Boulder County’s Twin Lakes Open Space hoping for better luck there. At Twin Lakes I hunted for a Great Horned Owl that I’d seen there. This time I was lucky.

Looking carefully in the cottonwoods, I spotted one near where I had seen them before, but much higher. As I set up my tripod the owl paid me no mind as it tried to sleep. But I think a crow was watching me watch the owl. Then, when the crow saw the owl, it called. Great Horned Owls hunt at night and sleep during the day, but crows sleep at night and hunt during the day. Soon more than a dozen crows were squawking and flying all around the owl. I had heard about mobbing, before but this was the first time I had seen it.

“Crows especially hate Great Horned Owls, their main predator, and take particular delight in harassing these hapless raptors as they nap during the day, often calling in friends to participate in the chase,” says the BirdHobbyist website. A study in Texas by Frederick Gehlbach, who observed 134 mobbing, concluded that, “Mobbing evolved principally to warn young birds and mates that a known dangerous predator was in their midst,” according to Dr. Wayne Lynch’s beautiful and definitive Owls of the United States and Canada.

The crows woke up the Great Horned Owl. During the mobbing, the owl looked all around and at one point looked straight at me.

A Great Horned Owl While Crows Mobbed It

A Great Horned Owl While Crows Mobbed It

Click on the picture above to enlarge

After the crows departed but before I left, the owl decided that flying a few feet to another cottonwood might be a better place to get some sleep. But before that, the owl had to get one more sleepy look at that tall stranger in its midst.

Going Back to Sleep Soon

Going Back to Sleep Soon

Click on the picture above to enlarge

Never Miss An Update

Subscribe to my free newsletter “Diabetes Update”

I send out my newsletter on first of every month. It covers new articles and columns that I have written and important developments in diabetes generally that you may have missed.

I also include new photo essays from this blog in my newsletter.

Your Email Address

Posted in: Photography

3 responses so far ↓

  • 1 macorni head // Jan 25, 2013 at 5:35 pm

    hey.I drew that owl in my report and I failed so you did a bad job

  • 2 jimmy // Aug 27, 2014 at 6:15 pm

    They’re so beautiful aren’t they? What do they mostly eat.. Besides crow?

  • 3 David Mendosa // Aug 31, 2014 at 4:36 pm

    Dear Jimmy,

    Owls, particularly Great Horned Owls, are perhaps my favorite birds of those that I can see without going far. They especially like to eat rabbits, but they eat mice, rats, squirrels, opossums, woodchucks, bats, weasels, and the occasional domestic cat.