Summer on the Tallgrass Prairie

“Rest is not idleness, and to lie sometimes on the grass on a summer day listening to the murmur of water, or watching the clouds float across the sky, is hardly a waste of time.” —John Lubbock

*******

When the pale purple coneflowers bloom on the prairie,  you know summer has arrived.

With the blooming of the prairie wildflowers comes their tiny pollinators, dusted in pollen, intent on finding the best nectar sources.

Everywhere, sheets of wildflowers open under the prairie sky. Purple-blue scurfy pea and the non-native but exuberant ox-eye daisies crowd together, a delightful pairing.

Black-eyed susans are suddenly noticeable, in all different stages of flowering. From bud…

To barely open…

…to just opening…

…and finally,  a full “open-house” for pollinators.

Purple milkweed, just about to bloom, waits for monarch caterpillars.

We don’t have much of it on the prairie where I’m a steward, so spotting its bright buds is a delight. It’s a fine contrast to the first blush orange that washes across the butterfly weed. Monarch caterpillars in my backyard and on the prairie seem to prefer this milkweed species.

Non-native nodding thistle—or musk thistle as it is sometimes called—blooms in startling pink, abuzz with a bee or two. It’s almost five feet tall! A show-stopper.

I’ve not seen this thistle before, and wonder how difficult it is to manage. I read that its seeds may remain in the soil for up to ten years. Even in bud, it is so unusual!

Prairie sundrops, Oenothera pilosella, are having the best year on the prairie that I’ve seen in more than two decades. Is it the lack of fire this season? Or the wet spring? I’d love to know what conditions have brought it to this state of profusion and perfection. Wilhelm’s Flora ranks its coefficient of conservatism as a “10.”

Wild coffee—sometimes called “late horse gentian”—offers up its odd flowers to anyone with the patience to look closely. Snowberry clearwing moth caterpillars (commonly called “hummingbird moths”) use wild coffee as a host plant.

Later, the each of the plant’s orange fruits—called “drupes”—will have three black nutlets resembling coffee beans. 

Prairie-loving creatures are everywhere. The ubiquitous silver-spotted skippers nectar on white wild indigo.

Damselflies, like this variable dancer, float dreamlike through the tallgrass.

This has also been a week of dragonflies, perching on old grass stalks and patrolling the prairie airspace. June is a big month for meadowhawk dragonfly emergence.

So many 12-spotted skimmers! They bask in the sunshine.

The butterflies are out on sunny days, brightening the prairies. Monarchs. Cabbage whites. And swallowtails. An eastern black swallowtail butterfly, flapping madly, is intent on finding non-native red clover, a good nectar plant. I’ve tasted red clover myself — so sweet! The butterfly is ragged and tattered. A survivor.

In the savannas near the prairies, the bluebirds rest in the shade. They are year-round residents on the prairie here, but I never fail to be astonished by their color. They may raise two broods each season. The young from the later brood will stay with the parents during the winter.

I’m grateful for their bright flash of blue glimpsed in any season.

In a woodland close to the prairies, the wood thrush sings its singular tune. It’s my favorite bird song, but a melancholy one, as I know the species is in decline. Read more about its amazing song patterns here.

The bees bump from bloom to bloom, drunk with the possibilities of June.

Summer on the prairie is just beginning.

Why not go see?

*****

John Lubbock (1834-1913) was an amateur biologist, with an interest in evolutionary theory and archeology. He and Charles Darwin exchanged correspondence. Lubbock is also thought to be the source for the quote, “We may sit in our library and yet be in all quarters of the earth.” Not a bad way to travel.

****

All photos and video copyright Cindy Crosby (from top to bottom): pale purple coneflower (Echinacea pallida), Belmont Prairie Nature Preserve, Downer’s Grove, IL; pale purple coneflower (Echinacea pallida), Belmont Prairie Nature Preserve, Downer’s Grove, IL; mixed wildflowers, Belmont Prairie Nature Preserve, Downer’s Grove, IL; black-eyed susan (Rudbeckia hirta), Belmont Prairie Nature Preserve, Downer’s Grove, IL; black-eyed susan (Rudbeckia hirta), Belmont Prairie Nature Preserve, Downer’s Grove, IL; black-eyed susan (Rudbeckia hirta), Belmont Prairie Nature Preserve, Downer’s Grove, IL; black-eyed susan (Rudbeckia hirta, unknown insect), Belmont Prairie Nature Preserve, Downer’s Grove, IL; purple milkweed (Asclepias purpurascens), Schulenberg prairie, The Morton Arboretum, Lisle, IL; butterfly weed (Asclepias tuberosa), Belmont Prairie Nature Preserve, Downer’s Grove, IL; musk thistle (Carduus nutans) with honeybee (Apis sp.), Belmont Prairie Nature Preserve, Downer’s Grove, IL; musk thistle (Carduus nutans), Belmont Prairie Nature Preserve, Downer’s Grove, IL; prairie sundrops (Oenothera pilosella), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; wild coffee or late horse gentian (Triosteum perfoliatum), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; silver-spotted skipper (Epargyreus clarus), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; variable (or violet) dancer (Argia fumipennis), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; unknown female meadowhawk (Sympetrum spp.); Belmont Prairie Nature Preserve, Downer’s Grove, IL;  12-spotted skimmer dragonfly (Libellula pulchella), Belmont Prairie Nature Preserve, Downer’s Grove, IL; eastern black swallowtail butterfly (Papilio polyxenes asterius), Dick Young Forest Preserve prairie, Forest Preserve District of Kane County, Batavia, IL; eastern bluebird (Sialia sialis), Schulenberg Prairie Savanna, The Morton Arboretum, Lisle, IL; wood thrush (Hylocichla mustelina) at Bliss Woods, Forest Preserve District of Kane County, Sugar Grove, IL; carpenter bee (Xylocopa sp.) on scurfy pea (Psoralidium tenuiflorum), Belmont Prairie Nature Preserve, Downer’s Grove, IL; Belmont Prairie Nature Preserve skies and prairie in June, Downer’s Grove, IL.

*****

Join Cindy for her upcoming online book event, online dragonfly classes, and online prairie ecology classes:

“Chasing Dragonflies in Literature, Life, and Art” Now Online! Saturday, June 27 10-11:30 a.m. Celebrate the release of author Cindy Crosby’s newest book, Chasing Dragonflies: A Natural, Cultural, and Personal History through The Morton Arboretum. Cindy will be joined by the book’s award-winning illustrator, Peggy MacNamara,  artist in residence at the Field Museum. Enjoy a talk from the author and illustrator about the book, interspersed with short readings and insights on what it means for us as humans to be at home in the natural world. A Q&A session follows. Register here.

“Dragonfly and Damselfly Beginning ID Online” through The Morton Arboretum. July 8 and July 10 –two morning classes online, with a day in between for you to work independently in the field, then bring your questions back for help. Register here.

“Tallgrass Prairie Ecology Online” begins a new session in September! Work from home at your own pace (with suggested assignment deadlines) for 60 days to complete the material, and meet other prairie volunteers and stewards on the discussion boards and in the optional ZOOM session. Register here.

Just released! Chasing Dragonflies: A Natural, Cultural, and Personal History. Order now from your favorite indie bookstore such as the Morton Arboretum Store and The Bookstore of Glen Ellyn, or online at bookshop.org and other book venues. Order direct through Northwestern University Press and receive 25% off — use coupon code NUP2020 and see the information below. Thank you for supporting small presses and writers during this chaotic time.

Want more prairie? Follow Cindy on Facebook, Twitter (@phrelanzer) and Instagram (@phrelanzer). Or enjoy some virtual trips to the prairie through reading Tallgrass Conversations: In Search of the Prairie Spirit and The Tallgrass Prairie: An Introduction.  

July’s Prairie Patterns

“The world is a confusing and turbulent place, but we make sense of it by finding order… . This makes us all pattern seekers. “– Philip Ball

*****

High heat and cool breezes; thunderstorms and calm mornings. From my hammock overlooking the backyard prairie patch, I’m astonished at the rapid growth of plants under the hot sun, watered by frequent rain showers. I swear I saw cup plants grow an inch right before my eyes! Anything seems possible in the bright light and blue skies of July.

As I swing in my hammock, I’m reading a new book from University of Chicago Press: Patterns in Nature.  It’s a revelation. As an art and journalism student in my undergrad years, I avoided math as much as possible. Now, I’m discovering the beauty of mathematics on the prairie. Symmetry. Fractals. Surface tension.

So many different combinations of patterns in July! I’ve always been intrigued by patterns in nature. But I didn’t understand much about what I saw.

Paging through Philip Ball’s book, I begin with symmetry, which Ball says, is at the root of understanding how patterns in nature appear.

It’s an eye-opener.

Ball notes that “Bilateral symmetry seems almost to be the default for animals. Fish,  mammals, insects, and birds all share this attribute.” I see this in the blue-fronted damselfly above; in the mirror-image wings of a skipper butterfly below. Divide them in half and each side is essentially identical.

It’s evinced in the reversed haploa moth, barely visible, deep in the tallgrass.

There is bilateral symmetry in a bison’s skull, with a few imperfections.

Or a monarch’s wings, even when tattered and worn.

Who wouldn’t marvel at the folded, paired symmetrical wings of the male violet dancer damselfly?

Once you begin looking for patterns in the natural world…

…you see them everywhere.

Fractal geometry, Ball writes, is said to be “the geometry of nature.” Fractals? What’s a fractal?  “Don’t know much algebra…,” sang Sam Cooke in his classic, “(What a) Wonderful World.” Yup. But I want to know more.

Ball boils it down to this: Look at a tree. A part of the tree, he writes, can resemble the whole, as the “tree algorithm” keeps making the same kind of structure repeatedly. As I hike the prairie one afternoon, I look up and all of the sudden it makes sense—once I understand what I’m looking at.

“Growing fractals”  are a type of fractal found in the network of arteries, veins, and capillaries in the vascular system—another “branching” effect, Ball tells me. I think of the “arteries” running across prairie dock leaves, so pronounced in the autumn.

I reflect on these concepts and my head aches. Fractals. Symmetry. So fascinating. So…complex. I regret now my ability to dodge everything math-related in college except for a course called “Cardinal Numbers.” A sort of 101 math for art majors. But maybe it’s not too late?

Early one morning, wading Clear Creek at Nachusa Grasslands, I admire the dew drops. I remember reading in Ball’s book that beads of water are driven by surface tension. Simply put, he says, surface tension pulls dew and rain into these “droplet” shapes, and gravity helps flatten the droplets. Ahhh. Look at that. Yes.

A different sort of pattern. I search for water droplets: on leaves, spiderwebs, even dragonfly wings. Each dewdrop has heightened meaning.

As I continue reading, chapter after chapter, then go for hikes to explore the different patterns in Ball’s book, his simple explanations for a non-scientist open up a new world for me. A world where math seems a little more applicable. A little more accessible. A little more…meaningful. Perhaps, though, the best moment in Ball’s book  is when he writes that the law of pattern formation is driven by wonder.

“We need to marvel and admire as well as to analyze and calculate,” Ball writes. Oh, yes. I’ve always been attuned to wonder; marveling comes without effort for me. Now, I’m learning the other side of the equation. Such an astonishing world!

So many “patterns” to marvel at and admire in the month of July on the prairie. Why not go see?

******

Philip Ball is the former editor for Nature. The quotes in this post are from his book, Patterns in Nature: Why the Natural World Looks the Way it Does (University of Chicago Press, 2016). Check it out here.

****

All photos copyright Cindy Crosby (top to bottom): July on the Schulenberg Prairie, The Morton Arboretum, Lisle, IL; monarch caterpillar (Danaus plexippus) on butterflyweed (Asclepias tuberosa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; blue-fronted dancer damselfly (Argia apicalis), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; silver-spotted skipper (Epargyreus clarus), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; reversed haploa moth (Haploa reversa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; bison (Bison bison) skull, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; monarch butterfly (Danaus plexippus) on rattlesnake master (Eryngium yuccifolium), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; violet dancer (sometimes called variable dancer) (Argia fumipennis violacea), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; gray-headed coneflower (Ratibida pinnata) seedhead, Schulenberg Prairie, The Morton Arboretum, Lisle, IL; orb weaver (family Araneidae) spider web, Brown County State Park, Nashville, IN; tree leafing out on the edge of the Schulenberg Prairie, The Morton Arboretum, Lisle, IL; prairie dock (Silphium terebinthinaceum), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; water droplets along Clear Creek, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; glade mallow (Napaea dioica), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.

Cindy’s Classes and Speaking

August 2, 8-11:30 a.m., Prairie Ethnobotany: How People Have Used Prairie Plants Throughout History, The Morton Arboretum, Lisle, IL. Register here.

August 12, 7-8:30 p.m., Dragonflies and Damselflies: The Garden’s Frequent Fliers, Fox Valley Garden Club, Aurora, IL. Free and open to the Public. Details here.

August 19-22, 8-5 p.m. daily, National Association for Interpretation Certified Interpretive Guide Training, The Morton Arboretum, Lisle, IL. Register here.

August 29, 7-8:30 p.m., Summer Literary Series: Tallgrass Conversations: In Search of the Prairie Spirit. Hope aboard the Morton Arboretum’s tram and enjoy a cool beverage, then listen to Cindy talk about the “prairie spirit” on the beautiful Schulenberg Prairie, the fourth oldest prairie restoration in the world. Register here.

See more at http://www.cindycrosby.com

Prairie Dragonfly Mysteries

“Instinct is a marvelous thing. It can neither be explained nor ignored.” ― Agatha Christie

*****

I’m a big fan of mysteries. As a teenager, I burned through all of Agatha Christie’s classics, and I still love to pick up an occasional thriller that keeps me guessing. As a naturalist, part of my attraction to the outdoors revolves around a different sort of mystery. Science has a lot of answers. But there are many unsolved questions out there.

I like that. Perhaps nowhere is mystery so evident as when I try to understand dragonfly migration.

This week, I’m prepping training workshops for two groups of dragonfly and damselfly monitors at the prairies where I’m a steward. We’re all volunteers, all citizen scientists collecting data that we hope will help future researchers learn more about these incredible insects.

During the workshops, we’ll discuss the life cycle of the dragonfly. It begins with a little rough and tumble dragonfly romance and then, ovipositing or egg laying.

Ouch! That’s got to hurt.

At the two workshops, we’ll share ID tips for differentiating among the 100 or so dragonfly species in Illinois and the almost 50 damselfly species, plus the various variations among male, female, and immature individuals. Pretty straightforward stuff, for the most part.

We’ll touch on the cultural history of dragonflies as well; their use in cuisine, art, and literature. I like this haiku by Basho: “Crimson pepper pod/add two pairs of wings and look/darting dragonfly.” You can see why he was inspired!

Dragonfly cultural history and much of dragonfly natural history is explainable, at least to some degree. But dragonfly migration! That’s where it gets difficult.

Dragonfly migration is less understood than that of the monarch butterfly, whose travel habits have been exhaustively studied, immortalized in novels, and  whose migration journey continues to fascinate the general public.

Or consider bird migration, the topic of many books like Scott Weidensaul’s excellent Living on the Wind, and the subject of countless research projects. Sure, there’s still mystery in avian migration. But plenty of information out there.

Dragonfly migration? Not so much. The process remains veiled in mystery.  We do know a few things: at least four dragonfly species in Illinois (green darner, black saddlebags, wandering glider, and variegated meadowhawk) head south for the winter, and probably some damselfly species as well.

But why these species? Why not others? Where do they go? What tells them to mass at the end of summer and fly, often in large swarms, to another place?

The Xerxes Society is a wonderful place to discover what we do know about the science of dragonfly migration. As an organization dedicated to protect invertebrates and their habitats, they are a good clearing house for insect migration information. Got some extra time? Click through the link here and read more about how citizen science volunteers are contributing to our understanding about dragonfly migration.

We do know that some dragonflies in North America may travel almost 2,000 miles south in the late summer and early fall. They often join raptors migrating south. Dragonfly offspring will travel the same distances, often with raptors, back north in the spring. Look around in science journals and on dragonfly websites and you’ll find comical images of green darners wearing tiny transmitters to track their movements; or complex studies of isotopes in dragonfly wings which help researchers determine their general place of emergence.

But once you start reading, you realize just how little we know about these dazzling creatures. You get to the end of the dragonfly migration studies pretty fast. It’s a good PhD project for some future researcher! Learning more about what makes some dragonfly species born with an itch to travel.

In April, we’ll begin to see the first battered and worn out dragonflies head north and arrive in the Midwest, heirs of those stalwart flyers who fled south last year. As dragonfly monitors, we’ll scribble about these early arrivals—and later, summer flyers and dragonfly departures—as hash marks on our data sheets. We’ll report the information to staff at our local prairies and natural areas. Then, in Illinois, we’ll upload it to www.illinoisodes.com, our state repository for this information. All very logical and linear isn’t it?

At some point in the season, most of us will put our pencils down and pause for a moment. Overcome with wonder. How amazing that this tiny creature logged those miles and survived birds, weather, and traffic to be here, on this prairie! How incredible that we can bear witness to this phenomenon, even for a moment.  How satisfying to be a small cog in the wheel of the research that is being done for the future!

And most of us will acknowledge this: Despite the data we’ll collect, despite all the facts we know, it’s that unknown that makes it so exciting to be a part of this citizen science project. The quest is part of the fun.

And we’ll marvel, in awe of the mystery of dragonfly migration.

*****

Agatha Christie (1890), whose quote opens this post, is the author of 66 mystery novels and 14 short story collections. Her books have sold more than a billion copies in the English language, and just as many in translation. My favorite quote of Christie’s: “The best time for planning a book is while you’re doing the dishes.”

Scott Weidensaul (1959-), who is mentioned in this post, is a Pennsylvania naturalist and writer. My favorite of his books, Living on the Wind,  examines the amazing world of bird migration. It was a finalist for the Pulitzer Prize in 2000.

*****

All photos copyright Cindy Crosby (top to bottom): black saddlebags dragonfly (Tramea lacerata), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; eastern amberwing dragonfly (Perithemis tenera), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; ebony jewelwing damselflies (Calopteryx maculata), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; damselflies in tandem, Schulenberg Prairie, The Morton Arboretum, Lisle, IL; violet dancer damselflies (Argia fumipennis violacea), ovipositing in Willoway Brook, The Morton Arboretum, Lisle, IL; calico pennant dragonfly, male (Celithemis elisa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; meadowhawk (Sympetrum, unknown species), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; monarch butterfly (Danaus plexippus) on butterfly weed (Asclepias tuberosa), International Crane Foundation, Baraboo, WI; great egret (Ardea alba) Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; wandering glider dragonfly (Pantala flavescens), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; slender spreadwing (Lestes rectangularis), Nomia Meadows Farm Prairie and wetlands, Franklin Grove, IL; American rubyspot damselfly (Hetaerina americana), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; river bluet damselfly (Enallagma anna), Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; blue dasher dragonfly (Pachydiplax longipennis) Schulenberg Prairie, The Morton Arboretum, Lisle, IL; raw data sheet, Schulenberg Prairie, The Morton Arboretum, Lisle, IL; Carolina saddlebags dragonfly (Tramea carolina), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.

********

If you enjoyed this blogpost, check out some other dragonfly resources at the links referenced above and this excellent blog post from a few year’s ago: Cool Green Science’s “Dragonfly Migration: A Mystery Citizen Scientists Can Help Solve.” 

Local friends: If you’re interested in exploring more about dragonflies, join me at Nachusa Grasslands in Franklin Grove, IL,  Friday, March 30, 2018 for a dragonfly workshop. Register by e-mailing me at phrelanzer@aol.com.

Basho haiku is taken from Forrest Mitchell and James Laswell’s marvelous book, A Dazzle of Dragonflies.

Deep Prairie Purple

During Fourth of July week, the only fireworks aren’t just in the sky. There are explosions of color as the prairie pours out purple.

The tallgrass sends up blooms of pale purple coneflowers…

Twirls and swirls of color.

Soft, fuzzy, antennae-like purple, deep in the stamens of moth mullein.

Firecrackers of  deep purple lead plant, with orange embers.

Bees buzzing ’round satellite spinners of purple prairie clover.

Lilac bee balm exploding into floral fireworks.

Tick trefoil and germander dot the tallgrass with occasional ooohs! and aaahs! of  lavender.

 

Violet dancer damselflies send purple aloft, darting here and there in surprising directions; then come to rest in the morning sunshine.

Vervain spikes light purple sparklers along the paths.

Unlike the noisy fireworks on July Fourth, these purple fireworks explode against a soundtrack of birdsong and wind. A bit of a rest after all that night time noise, isn’t it?

 

Why not see for yourself? Go for a hike today — enjoy the quiet, and the magic of the color purple.

All photos copyright Cindy Crosby (top to bottom): mother bison and baby bison (Bison bison)  Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; the prairie in July, Schulenberg Prairie, The Morton Arboretum, Lisle, IL; purple prairie clover (Dalea purpurea), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; moth mullein (Verbascum blatteria), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.; lead plant (Amorpha canescens), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.; purple prairie clover  (Dale purpurea) and a bee, Schulenberg Prairie, The Morton Arboretum, Lisle, IL.; monarda  or wild bergamot, (Monarda fistulosa) Schulenberg Prairie, The Morton Arboretum, Lisle, IL; Illinois tick trefoil (Desmodium Illinoense) and germander (Teucrium canadense), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.; violet dancer damselfly (Argia fumipennis violacea), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.; hoary vervain (Verbena stricta), Schulenberg Prairie, The Morton Arboretum, Lisle, IL;  prairie in July, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL.