Tag Archives: International Rock Flipping Day

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Sunday (September 9) was International Rock Flipping Day, hosted by Wanderin' Weeta.

What is International Rock Flipping Day? It is a blog carnival to celebrate all those critters that live under rocks, as well as the naturalist spirit that drives us to look a little deeper.

How to participate? Basically you go outside and look under a rock or two. Record what you see by drawing, painting, or taking photographs. When you are done, carefully return the rock to its original position. Then report your findings to Wanderin' Weeta.

I usually post the bulk of my finds at my children's science blog, Growing With Science, because this is a great event to share with children.

Looking under rocks is also a fantastic way to find ants. Rocks absorb and radiate heat and/or retain moisture underneath, creating an ideal microhabitat for ants.

I sampled a suburban area near Phoenix, Arizona. I wish I could report something new this year, but no luck. It is still good to see some of the same old friends as last year.

I didn't even have to flip this rock to know there were southern fire ants (Solenopsis xyloni) underneath. Normally you might not even notice a southern fire ant nest because it is largely underground. When it has been raining, however, the fire ants tend to announce their presence with small mounds of dirt particles. Characteristically these mounds will have multiple entrances to the nest.

Southern fire ants seem to coexist with the other main ants we find here,

the rover ants, Brachymyrmex patagonicus. Aack, they are everywhere.

The sidewalk ants (Forelius) are still doing fine. These weren't nesting under the rocks I flipped, but were foraging there.

Also, still seeing these rove beetles associated with southern fire ant nests.

Maybe I'll have to find someplace more exotic to visit for next year's event.

How about you? Did you participate this year? What did you find?

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Did you know that today is International Rock Flipping Day?

The idea is to go outside, flip over a few rocks, and record what you see. The resulting posts will be published at Wanderin' Weeta.

After looking under a couple of rocks, I posted about most of the creatures I discovered (including a very cool case-bearing larvae) at Growing With Science. Of course flipping rocks is a fabulous way to find ants (and "experience" ants in other ways, too), so let's take a look at what ants were hiding under rocks today.

The area I chose has mowed grass with a brick edging around it, as well as some rocks piled up in a drainage ditch. It isn't uncommon to see Forelius running along the edging, so it was no surprise to find a few under the rocks as well.

Southern fire ants were in full force, too.

I was surprised how much more red these show that the ones in my yard a football field-length away.

I managed to get stung while taking this photograph. (Flipping rocks does has its hazards.)

Of course, Dolichoderinae don't sting.

But they are more than willing to bite.

At least it was sitting still, so it is in focus 🙂

Did you participate in International Rock Flipping Day? What did you find?