Photos of the Week – August 31, 2023

Late summer might be my favorite time of the year for prairie photography. Sunrise is at a reasonable time of day and is often accompanied by calm winds and heavy dew. Many of the tall summer wildflowers are in full bloom, as are a lot of the warm-season grasses. Insects are super abundant, active, and (some of them) noisy. Perfect.

The last week has been particularly great for all of those reasons and I’ve had an unexpected amount of time for photography. As a result, I’m only sharing a fraction of my favorite images from that period and will probably share at least another post’s worth next week. I sure hope you are all getting a chance to explore late summer prairies wherever you are. Unless you’re in the southern hemisphere, of course. In that case, happy spring!

Big bluestem and sunrise light. 105mm macro lens. ISO 640, f/16, 1/100 sec.

A lot of grasses are blooming right now. Big bluestem, Indiangrass, sideoats grama, and other tall-to-mid-height grasses are full of anthers. I’m not going to make a joke about what questions they might have anthers to. That would be puerile. Also, I don’t get the chance to use the word ‘puerile’ very often.

Because grasses are wind-pollinated, they don’t have showy flowers or nectar to attract insects, but they do still have flowers. Grass pollen, though, is nutritious enough that at least some pollinating insects are drawn to grass flowers to feed. There’s a little leaf beetle I see on those flowers pretty often, along with lots of little hover flies (both pictured below).

Big bluestem flowers. 105mm macro lens. ISO 500, f/16, 1/100 sec.
Big bluestem flowers. 105mm macro lens. ISO 800, f/14, 1/320 sec.
Leaf beetle on big bluestem flowers. 105mm macro lens.  ISO 800, f/14, 1/80 sec.

Sideoats grama flowers are always my favorites because they hang so nicely from their stems. They often look like laundry on the line. Neat and tidy.

Except when they aren’t. Then the flowers look like they are full of static electricity and stick out as far as they can from the stem.

Sideoats grama flowers. 105mm macro lens. ISO 500, f/14, 1/160 sec.
Sideoats grama. 105mm macro lens. ISO 800, f/11, 1/80 sec.
More sideoats grama. 105mm macro lens. ISO 800, f/11, 1/80 sec.
Sideoats grama after sunset. 105mm macro lens. ISO 800, f/18, 1/250 sec.

Our family prairie was full of bees, butterflies, and grasshoppers this week. We’re still stubbornly in extreme drought, according to the Drought Monitor, but we’ve caught enough rains that most of the vegetation is green and flowers are blooming. The biggest indication of the drought is the slowness with which grass is recovering from grazing, which is why we will be pulling cattle out soon and reducing next year’s stocking rate significantly.

A sachem (a skipper – a kind of butterfly) warming itself in the morning sun. 105mm macro lens. ISO 500, f/18, 1/60 sec.

Meanwhile, when walking through the prairie now, grasshoppers are like popcorn at our feet, exploding in every direction with each step. I imagine that’s providing a lot of food for animals that enjoy grasshoppers. Interestingly, I don’t see a lot of obvious impact of those grasshoppers on the vegetation. That’s clearly a sign of me not knowing what to look for, of course, because they have to be eating. But I sure don’t see evidence that they’re reducing vegetation height. Hmm.

Two-striped grasshoppers are common, but so are lots of other species. 105mm macro lens.  ISO 640, f/16, 1/80 sec.
Grasshopper exoskeleton left behind after molting. 105mm macro lens.  ISO 500, f/9, 1/200 sec.
Katydids are abundant now too, including this one on stiff goldenrod. 105mm macro lens.  ISO 500, f/14, 1/60 sec.
Katydid, face to face. 105mm macro lens.  ISO 500, f/20, 1/60 sec.

Late summer also seems like the peak time of year to find male bees roosting overnight on vegetation. I’ve always assumed that those males just find a random roost site each night, but observations in my backyard prairie are making me question that. We have a strip of prairie garden along the back alley and there is one Indiangrass plant among mostly wildflowers and sedges. During much of the summer, I’ve been finding several male bees on that Indiangrass plant each morning I remember to check.

While I can’t tell one bee from another within the same species, it sure appears that I might seeing the same bees every night, or at least that some of them are repeat visitors. That makes me want to drop everything and do a research project in which we mark bees one morning and see if they return. Of course, if we mark them while they’re on their roost, that might dissuade them from returning… Hmmm. How do we set this up? Oh, wait, I don’t have time to do that study anyway. You should, though.

Sweat bee settling in for the evening on big bluestem. 105mm macro lens.  ISO 800, f/13, 1/60 sec.
Bumble bee in dew on pitcher sage (Salvia azurea). Lincoln Creek Prairie. 105mm macro lens.  ISO 800, f/16, 1/100 sec.

I also wonder about flies and other insects that get covered in dew overnight. Do they select roost sites where they feel protected from predators? Or places where they’ll get early sunlight to warm and dry them the next morning? Or do they just gradually slow down as evening comes along as if they are clockwork toys winding down? What an evocative image that is!!

(Do you young whippersnappers know what clockwork toys are? Do you know what whippersnappers are?? Actually, I don’t think I really know what whippersnappers are…)

Hover fly in dew on stiff sunflower (Helianthus pauciflorus). 105mm macro lens.  ISO 800, f/18, 1/60 sec.
Goldenrod soldier beetle on stiff sunflower. Lincoln Creek Prairie. 105mm macro lens.  ISO 800, f/18, 1/80 sec.
Stink bug in dew. Lincoln Creek Prairie. 105mm macro lens.  ISO 800, f/16, 1/200 sec.

One of my favorite discoveries this week was a snail at Lincoln Creek Prairie, right across town from me. I’ve been exploring and photographing Lincoln Creek Prairie for 26 years or so and have never seen a snail in the prairie until this week. In fact, I can’t think of where I’ve seen a land snail in a Nebraska prairie anywhere close to here. Why now? Where was it hiding? Are there more? What species is it? Why does Wendy’s make square hamburgers??

Land snail! Lincoln Creek Prairie. 105mm macro lens.  ISO 800, f/18, 1/60 sec.

I was doing some work on the exterior of our house this week, but kept getting distracted by insects, including a couple monarch caterpillars in our swamp milkweed patch. I watched them munch away for a while and finally got to capture a phenomenon I’d heard about but hadn’t seen in person. Sometimes, larger caterpillars will chew through part of the leaf petiole (the stem of the leaf) before feeding on the leaf itself. It apparently cuts off the flow of sticky white latex into the leaf, making it easier to eat the leaf material. That seems eminently sensible, but what a cool adaptation! The third photo below shows that happening.

Monarch caterpillar. 105mm macro lens.  ISO 800, f/16, 1/125 sec.
Monarch caterpillar upside down. Helzer yard. 105mm macro lens.  ISO 800, f/18, 1/500 sec.
Monarch caterpillar chewing the leaf petiole of a swamp milkweed leaf. Helzer yard. 105mm macro lens.  ISO 800, f/13, 1/320 sec.
Monarch caterpillar feeding on swamp milkweed. Helzer yard. 105mm macro lens.  ISO 800, f/18, 1/500 sec.

There were quite a few monarch adults in the yard too, most of them feeding on Kim’s zinnias. Take that, purists who don’t think anything but native flowers should be in our yards! (There’s nothing wrong with putting only native plants in your yard. There’s also nothing wrong with adding some non-native flowers that make you happy, as long as they don’t have systemic pesticides in them and aren’t invasive species.)

During one of my many ‘breaks’ from working on the house, I chased a plume moth for a while until it finally sat for a photo. There was also a Carolina mantis hiding in the milkweed patch, too. I saw it several days in a row. It was mainly lurking in the shadows, which is why I enjoyed getting the photo I got, which captured that very well. I haven’t finished that house project yet. Weird.

Plume moth in my yard. 105mm macro lens.  ISO 800, f/16, 1/125 sec.
Carolina praying mantis in the shadows of a swamp milkweed plant. Helzer yard. 105mm macro lens.  ISO 800, f/13, 1/160 sec.

Finally, here’s a toad.

Woodhouse’s toad. 105mm macro lens.  ISO 500, f/16, 1/100 sec.
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About Chris Helzer

Chris Helzer is the Director of Science for The Nature Conservancy in Nebraska. His main role is to evaluate and capture lessons from the Conservancy’s land management and restoration work and then share those lessons with other landowners – both private and public. In addition, Chris works to raise awareness about the importance of prairies and their conservation through his writing, photography, and presentations to various groups. Chris is also the author of "The Ecology and Management of Prairies in the Central United States", published by the University of Iowa Press. He lives in Aurora, Nebraska with his wife Kim and their children.

13 thoughts on “Photos of the Week – August 31, 2023

  1. Enjoyed this post especially, the monarch caterpillar eating the leaf petiole is great! Thanks. I don’t think I’ve ever seen one of your posts focus on fireflies? I’ve just learned that we have fireflies, several species, in Arizona. They seem to like wet grassy areas and their larvae feed on snails….so if you have a chance, I’d like to know whether you have them in the prairies, which habitats, and anything else you can tell me.

  2. Have had several Plume Moths around my door recently. I didn’t know what they were. Now I don’t have to look somewhere to identify them. Thanks.

  3. Bee butt in obedient plant flower, beginning to warm with the early morning sunrays on a cool morning. Donna Hughes Iowa

  4. Chris, what an awesome post this week. I love the grasses, I love the prairie grasshoppers and I raise a few monarch butterflies. I also have a friend living under my potting table, Mr Toady. So I loved all of your photos! Thanks for what you do, now excuse me while I go out and check our big blue stem for flowers!
    Take care Chris!

  5. Hey Chris,

    I have also noticed that my Longhorned bees seem to roost on the same stalk at night. There was quite a few of them this year, the most I’ve ever had but maybe that’s because the prairie is bigger than it’s been every year before this. Anyway I enjoyed learning about how bees do this and then I shared it with others and hopefully we can increase habitat by doing this over time.

    Suzanne

  6. This blog post showcasing the Photos of the week is like a virtual bouquet of nature’s beauty. The vibrant and captivating flower photos are a delightful visual treat. It is incredible how photography can capture the essence and intricacies of these blooms.
    Kudos to the photographer for capturing these moments of floral splendor and sharing them with the world. Each photo is a testament to the beauty that surrounds us, often in simplest of things.

  7. Thanks Chris for answering my question on why the monarch caterpillar chews the stem of the leaf first. I’ve seen it so many times this year and was very curious. I had never seen that either until this year, well, because I haven’t had that many caterpillars before. Thank you for all your great photos, comments and teachings!

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