Grant Creek

Chalking up Illinois Nature Preserve #17 of 50 this year was a piece of cake. Sort of. I spent the early part of the morning monitoring grassland birds — as I do every spring — at Tract 104 within Midewin National Tallgrass Prairie. Then I jumped in the car and headed to the southwest side of Midewin to visit Grant Creek Nature Preserve.

According to Google Maps, the preserve was accessible via a frontage road to I-55. However, turning onto the road, I immediately came to a closed gate, beyond which lay an unpaved, overgrown two-track.

That’s one of the things I love about Nature Preserves: many of them lie in seemingly lost or forgotten places. When it was dedicated as a Nature Preserve in 1978, Grant Creek lay between I-55 and the mothballed Joliet Arsenal.

To most folks, speeding by on the highway, then and now, Grant Creek Nature Preserve — if noticed at all — probably seems a fallow farm field at best. A weed patch at worst, waiting for some better use to come along. But, according to the Illinois Natural Areas Protection Act, all nature preserves are put to their “highest, best and most important use for the public benefit.”

Leaving my car at the frontage road gate, I have to agree that the two-track is in fact mostly a patch of weeds. Honeysuckle and other non-native invasives abound. Not that I’m complaining, as they provide habitat for a wealth of shrubland birds: willow flycatchers, field sparrows, orchard orioles, and yellow warblers.

 

But here and there between the dense shrubbery, I spy glimpses of open space. A mile down the road, I find an open gate leading into 78 acres of “high quality wet prairie and mesic prairie communities with over 110 different native prairie plant species.”

The yellow umbrels of wild parsnip appear pretty enough, but they can burn people and crowd out the likes of native spiderwort and other native plant species

In truth, this rare patch of probably unplowed prairie — the presence of limestone too close to the surface made it unfit for anything other than grazing — could use a little TLC. The continuing state budget woes have resulted in cutbacks and other compromises in the ability of the Illinois Nature Preserves Commission and the Illinois Department of Natural Resources to adequately steward their sites.  For instance, native spiderwort is in full bloom, but competes with wild parsnip. In addition to being a weedy, non-native invasive plant, wild parsnip is a danger to people — contact with the plant can result in painful, blistering burns. More benign, but equally unhealthy are the number of shrubs dotting the preserves. Grassland birds — the most imperiled class of birds — require large expanses free of shrubs in order to breed successfully.

This said, perhaps the very highest value of Grant Creek Nature Preserve is that it provided the template for restoration at the Grant Creek restoration area at Midewin, with which it shares a border.

Historically, the soils of the Grant Creek area within Midewin were a little more substantial, which led early farmers to ditch and drain the area for farming. Even then, the soils were thin enough that they had to cut into limestone to lay the drain tiles.

Gary Sullivan of The Wetlands Initiative unloads a truckload of native plant plugs during a volunteer workday

Working hand-in-hand with the US Forest Service, The Wetlands Initiative removed the drain tiles, cleared the area of non-natives grasses and fallow farm weeds, and — using the adjacent nature preserve as a guide — replanted the site with native plant species.

Over the years, I spent more than a few volunteer days helping to restore Grant Creek, ankle-deep in wet prairie, hand planting native plant plugs. And as the mix of wet and dry prairie has recovered, I’ve joined with others to monitor the recovery of grassland birds to the area. Today, the site is particularly rich with dickcissels, eastern meadowlarks and bobolinks. Listen closely, and you’ll hear the occasional Henslow’s sparrow, a state-listed threatened species. Rare is the day that I don’t see great egrets, impossibly white against the emerald green of their wetland habitat. And although no one yet has confirmed it, I suspect that sandhill cranes may be nesting in Grant Creek or some other similarly-restored area at Midewin.

Bobolink on the wing — emitting its burbling mating call — over the restored prairie in Grant Creek

In its entirety, Grant Creek is part Nature Preserve and part National Tallgrass Prairie. It also stands the intersection of our past and future efforts to protect the natural lands we love. Because of George Fell, we have a strong nature preserves system (when it is fully funded) that provides permanent protection for our best and most important natural area gems. Because of the US Forest Service, The Wetlands Initiative and other nonprofit partners, and a growing army of dedicated volunteers, we are reclaiming more and more of our natural area heritage. Acre by acre, we are putting the prairie back in the Prairie State.

The restored wet prairie land of Grant Creek

6.7 Miles and 2.5 Million Years Ago at Midewin

According to an app on my my iPhone, I took 18,594 steps today at Midewin National Tallgrass Prairie, totaling 6.7 miles. In truth, I went much farther than that. As I strolled through recovering prairie lands, I traveled back in time–through 1945 and the arsenal era, through the pioneer farmer era of the 1800s, all the way back to the time of the last glacier and beyond.

South Patrol Road Prairie in a snowless mid-February

In spite of the unseasonable, 70 degree temperature, the prairie doesn’t look like much in mid-February. It’s understandable how most people driving along historic Route 66, which runs through the middle of Midewin, are likely to perceive nothing more than dead weeds.

Oh, but before the prairie wakes is a perfect time to dive deeper into the history of Midewin. The dry, matted grasses make it easier to climb the steep slopes of munitions bunkers. This provides a bird’s eye view of the Joliet arsenal era. During the 1940s, hundreds of bunkers on the west side of Midewin harbored massive amounts of TNT and its component chemicals, while even more bunkers on the east side of Midewin held the end products–bullets and bombs that were shipped overseas in support of Allied troops fighting the Good War.

Before trees and shrubs leaf out, the remains of various pioneer homesteads are easier to spy. They lie tucked within overgrown copses–originally planted, no doubt, to provide the earliest settlers some protection from the prairie sun and winds. When the government forced the farmers to sell their land in order to build the arsenal, all the farm structures were either moved or razed, leaving nothing but their limestone foundation bones–memorial relicts, really, of those who first busted the prairie sod as far back as the 1830s.

Amid yet other leafless copses lie mounds of other kinds of stones. These are reflective of the pioneer settler era as well as the Pleistocene Epoch. In the process of plowing up the prairie, pioneer farmers found they also needed to clear their fields of massive granite boulders. Known as glacial erratics, these boulders were left behind by the mile-thick glaciers that last blanketed northeastern Illinois about 14,000 years ago.

As it turns out, placing your hand on a sun-warmed rock from so long ago pales in comparison to hearing the clarion call of a sandhill crane, which speaks to Midewin’s even more distant past as well as its future.

Sorry for the lousy pic–the crane came upon me so quickly and close that I couldn’t get focused fast enough.

The oldest sandhill crane fossil dates back 2.5 million years ago. Once threatened with extinction due to hunting and habitat loss, sandhill cranes continue to make a comeback. Over the past few years, as more and more of Midewin has been restored, flocks of sandhills–or sandies–have been regular visitors to Midewin, stopping over on their migration from Florida to Wisconsin and the upper midwest.

During this time,there has been a pair or two of sandhills that hangs around Midewin throughout the breeding season. No one yet has found a nest, but expectations are that it’s just a matter of time before this largest and most ancient of North American birds raises young again amid the “dead weeds,” better known as hundreds of species of native prairie grasses and flowers, at Midewin.

South Patrol Road Prairie in high summer herbage.

You Make a Life by What You Give

The title comes from Winston Churchill: “You make a living by what you get. You make a life by what you give.” On Saturday night, scores of volunteers were honored by what they so richly give to Midewin National Tallgrass Prairie.

I’ve been volunteering at Midewin since it was established as the nation’s first national tallgrass prairie in 1996. That’s me, below on the right, at one of the first volunteer workdays, alongside Jerry Heinrich.  Over the years, I’ve cut invasive brush, pulled garlic mustard, harvested native seed, cleaned it, planted it in native seed beds and hand-sowed it in several prairie and wetland restoration areas. Of late, mostly what I do is monitor grassland birds.

But all of this pales in comparison to what Jerry Heinrich has done. Along with this wife, Connie, he practically lives at Midewin. And for Midewin. Even before Midewin was established, he served on the 24-member Joliet Arsenal Citizens Planning Commission, which led to Midewin’s establishment in 1996. Thereafter he was among the founders of the Midewin Tallgrass Prairie Alliance, a “friends” group in support of Midewin, and for many years has served as its president. He leads tours, he cooks hotdogs, he fixes equipment, runs plant sales, and is an avid lookout for new invasive species. In short, he does whatever is needed and he is–quite simply–one of the most eloquent and personable ambassadors for Midewin. For all that he does, Jerry was one of only seven people nationwide this year to receive the US Forest Service Volunteers & Service Restoration Award.

Other volunteers received handsome ceramic plaques in recognition of their efforts. A couple of volunteers were recognized for their dedication over many years–Don Grisham put in 2,350 hours since 2001, and Len LeClaire (below, on the left) 2,080 hours since 2007. Bob Green clocked 242 hours since February of this year.

All in all, over the course of 2016, volunteers gave more than 13,600 hours of their time. At the low, low volunteer valuation rate of $23.56 an hour (according to the Independent Sector), that adds up to more than $320,000 of donated time. Or, to put it another way, 13,600 hours is the equivalent of an additional 8 full-time staff working to restore Midewin–for free!

The evening’s MC, Volunteer Coordinator Allison Cisneros, pointed out how challenging the volunteer work can be–cutting buckthorn in freezing temperatures or enduring ticks, chiggers, heat and humidity on an August work day in the field.

But she also pointed out what makes volunteering fun–learning new skills, meeting new friends, and making a difference. Among the 42 different kinds of volunteer opportunities available at Midewin, the evening program featured presentations on two of them: 1) a new ranger program, in which volunteers greet a hugely growing number of visitors who come to see Midewin’s new bison herd, and 2) an archaeological dig on a site dating back 10,000 years.

Of course, the success of Midewin also relies on exceptional professional staff. In this, Midewin is equally fortunate to have so many dedicated individuals. But Saturday night was all about the volunteers and celebrating another successful year of so many people giving so generously of their time and talents to take care of our public lands.

I’m grateful to be counted among them. I’m grateful for all that Midewin gives back to me.

 

Cowbird Conundrum

I recently posted this photo to Facebook – a yellow warbler feeding a cowbird baby. A good friend replied, “I disdain the parasitic cowbirds.”

I so get that. Cowbirds make me crazy, too.

For those who don’t know, cowbirds are “brood  parasites.” Or deadbeat parents. That is they lay their eggs in the nests of other birds – about 220 different species – then leave the raising of their young to others.

Some bird species recognize cowbirds eggs and push them out of the nest, or puncture their shells with their beaks. But most species are unable to recognize cow bird eggs. Or, there is new evidence that suggests that some species recognize the foreign eggs but accept them in order to avoid having their nests being destroyed by cowbird parents as a form of punishment for not raising cowbird young.

In any event, cowbirds eggs hatch faster. The foster parents, for whatever reason, feed whichever gaping beak is in their nest. As the bigger cowbirds gain strength, they frequently push the other eggs out of the nest or smother their nest mates in the bottom of the nest.

To watch a tiny yellow warbler, which weighs about a third of an ounce, feed a young cowbird is to watch an over-worked parent fill the gaping maw of real-life Baby Huey that will grow to five times its size.

How did cowbirds evolve this way? Blame it on the buffalo. Cowbirds are native to North America, and co-evolved with the massive bison herds of yesteryear. Cowbirds would follow the herds and feast on the bugs stirred up by the grazing bison. But because bison are nomadic, when they moved on, the cowbirds were forced to move with them. Which meant that someone else would have to watch over their young. And so some clever bird figured to lay its eggs in the nest of some other mother bird.

Once the great nomadic bison herds were eliminated, cowbirds kept to their bad parenting ways, and pose a significant threat to song bird and grassland bird populations, which are facing numerous other threats to their long-term survival.

That’s another reason why Midewin is so important. One of the most effective ways of controlling cowbird parasitism is to restore large landscapes, which minimizes what is known as “edge habitat.” Cowbirds prefer forest edges, which provides them ready access to the nests of many grassland bird species. But restoring Midewin’s 19,000 acres to native tallgrass prairie, eliminating the old hedgerows and volunteer stands of weed trees, will greatly reduce the ability of cowbirds to prey on the nests of unsuspecting birds.

Is this catbird gathering food for its own young, or unwittingly for a cowbird?

Especially with the recent reintroduction of bison to Midewin, there are certain to remain some native cowbirds as part of the prairie ecosystem. But Midewin is big enough – sometimes size really does matter – to provide balance among all of the many different kinds of birds, mammals and plants of the native tallgrass prairie.

Bison Bird?

“What’s in a name?” Juliet asks of Romeo. “That which we call a rose by any other name would smell as sweet.” I can’t attest to how a cattle egret might smell, but no matter which of several common names you call Bubulcus ibis, it is one sweet bird.

Its common name in North America is cattle egret. This picture I took at Midewin today provides pretty good evidence why. They feast on insects stirred up by grazing animals, frequently perching on their backs as they await a meal.

This is probably a trick – or adaptation – they learned in Africa, where the species originated. There, cattle egrets are known as elephant birds, or rhinoceros egrets or hippopotamus egrets. Their arabic name, Abu Querdan, means father of ticks, a name given in the misbelief that this species pick ticks off the backs of its grazing herbivores.

In Europe, cattle egrets are known as buff-backed herons for the patches of buff color on their backsides (not to mention their bellies and their head crests.) This – in addition to their smaller size – is one of the easiest ways of distinguishing them from great egrets, also present at Midewin.

Great egrets are larger than cattle egrets, and lack their buffy markings.

Cattle egrets are not all that common at Midewin. According to ebird, the first one was sighted there in 1996. I first glimpsed one in 2011, and then not again until today.

There are quite a few cattle at Midewin. At least for now. Cattle are a kind of stop gap measure until Midewin can be fully restored. Rather than let the former ag and arsenal lands go fallow, grazed pasturelands actually provide pretty good grassland bird habitat – a major management objective at Midewin. Additionally, pasture leases provide additional income that gets channeled back into restoration.

Dickcissels are among the grassland bird species that benefit from grazed pasturelands.

One day, once all the land is restored and the cattle leases expired, will Midewin’s cattle egrets adapt to become bison birds? As a species, cattle egrets did not co-evolve with American bison. Native to Africa, cattle egrets managed to find their way to South America in 1877, and then worked their way northward to the United States by 1941 – long after the storied bison herds of the 1800s had been eliminated.

A quick Google search already reveals that cattle egrets are adopting to bison just fine elsewhere. After all, how hard can it be to ride a bison once you’ve mastered elephants, rhinos, hippos, and bare-backed moo-cows?

Spring is Deceptive

At first glance, a prairie doesn’t look like much in early spring. Some might even go so far as to say it’s nothing so much as a bunch of dead weeds.

But look closely, take a long, leisurely walk through Midewin, and you’ll see the joint is really hopping, buzzing, chirping and bellowing with life.

At 19,000 acres, Midewin is big and diverse enough to harbor an exceptional diversity of birds. Over the past several years, I’ve seen 125 different species at Midewin. Today, as resident and migrant species return, I’ve seen 46 species, including brown thrashers. Typically, they are solitary and secretive. A fleeting glimpse is mostly what you can expect before they disappear into a thicket. Except in early spring, when they perch in yet-leafless trees to sing their melodious mating calls, while keeping a wary eye on the world.

Black-capped chickadees hang around Midewin all winter long, but it’s in spring that these tiny bundles of energy – weighing about a third of an ounce – really get busy, harvesting every nook and cranny for seeds, insects and spiders, while filling the air with insect buzzes, major fourth call notes and their namesake “chick-a-dee-dee-dee.”

Particularly thrilling is spotting a loggerhead shrike. Midewin is home to a handful of breeding pairs of this state endangered and proposed for listing as federally threatened species. In addition to their rarity, they are notable for caching prey – insects, rodents, even other small birds – on thorns, of which there are plenty at Midewin with all of the osage orange trees remaining from its pioneer past.

On one of the warmest days thus far this spring, the warm-blooded creatures of Midewin – me included – are not the only ones enjoying the welcome sunshine. To survive the winter, garter snakes go into hibernation (technically brumation, in that being cold-blooded – technically, ectotherms – they remain alert but sluggish, the cold slowing their metabolism to nearly zero, which means they can go long periods without eating but not starve.) When the temperatures warm, up goes their metabolism and they must reemerge to feed. On the other hand, who doesn’t love basking in the sun after a long winter?

So, too with green frogs and painted turtles.

High summer is when the prairie is ablaze with more than 200 species of grasses and flowers. But in early spring, Midewin’s Prairie Creek Woods harbors a host of woodland ephemerals, such as this swamp buttercup, in turn hosting one of many different kinds of native bees.

As with every season, there is always a little sadness. This fledgling painted turtle apparently tried to leave its nest and make its way to a wet area, but ran out of energy on the gravel path.

But this death also provides an opportunity to take the kind of closer peek at the beautiful underbelly of a painted turtle, something you almost never get to see by observing critters in the wild.

Something else you seldom see are duck nests. Unlike mallard drakes (males) that boast metallic-emerald green heads, the hens (females) are dull, streaky brown, the better to blend in with their ground nesting environs. Clambering atop one of Midewin’s old arsenal bunkers for a panoramic view of the landscape, I inadvertently flushed a hen from her nest, which was nestled against the bunker’s exhaust vent.

At the other end of the animal spectrum, Midewin has officially welcomed its first baby bison. I don’t have pictures yet, but stayed tuned. Better yet, head out to Midewin yourself. A big, beautiful prairie and all the life it harbors awaits you.

Surviving Midewin Hairless and Featherless

Overcast and cold this morning, out on the recovering prairie lands of Midewin. About 27 degrees, with a slight wind making it feel more like 21. Perfect weather for marveling at the hardiness of birds and bison, alike.

Bison, of course, are legendary for their ability to withstand the frigid temps and deep snows. The 27 bison that arrived at Midewin a few months ago appear to be adapting well to their first Illinois winter. The snow cover thus far has been thin, which means they haven’t yet needed to use their massive heads as snow plows to access the grasses upon which they feed.

As for the cold, well, a temperature in the 20s is practically beach weather for bison. In the winter, bison sport two kinds of hair – an outer layer of course, thick hair, and an inner layer of soft, fine hair. I know a little about the inner layer – my scarf if made from yarn spun from this source. It is the warmest, softest scarf I have ever owned. (It also holds a little sentimental value for having been knitted by Marta Witt, a former chief information officer for the US Forest Service, stationed at Midewin.)

 

To get down to the science of it, bison fibers have a micron count of 15. A micron is one-millionth of a meter. The lower the micron count, the softer, the warmer the fiber. Most wool fibers range between 23 and 27 microns. Cashmere, the softest fiber in the world, beats bison by only, well, a hair, clocking in at 14 microns. And like cashmere, bison contains no lanolin, which renders it hypo-allergenic.

OK. Weighing a ton and wearing, essentially, thick blankets of insulation, it’s easy to imagine how bison survive the winter on the open prairie.

 

But what about birds? What about downy woodpeckers, for instance, that weigh no more than an ounce, or about the equivalent of a first class letter? How is it possible that they survive even five minutes, let alone an entire winter season?

Well, as it turns out, feathers are the most naturally insulative material on earth. Think down jackets, and how they trap countless pockets of air to keep their wearers warm. On average, small birds are covered by an astonishing 2,000 to 4,000 feathers, most of which are entirely downy in structure. Tucked safely beneath contour feathers, which are waterproof, they provide – to use sleeping bag insulation parlance – a lot of “loft.” Or, to use the construction industry’s term, a high “R-value.” Or, in layman’s terms, a lot of warmth.

Me, curious mammal that I am, the only way I’m enduring even two hours of cold this morning is to layer up my mostly hairless and entirely featherless body with a wicking t-shirt, a thermal long sleeved shirt, a cotton turtleneck, a cotton hooded sweatshirt and an insulated leather coat; plus, of course, gloves, hat and that awesome bison scarf.

 

The Fall

In religious circles, “the fall” gets such a bum rap. Adam and Even disobeyed God by eating of the fruit of the tree of knowledge in the Garden of Eden, therefore everyone born into the world is tainted by this fall, this original sin.

Oy.

Me, I find nothing but grace, redemption and beauty in the fall at Midewin, my Garden of Eden.

 

The air crisp. The sun warm. Autumnal colors sharp against the crystalline-blue sky. There is no blood red to compare with Virginia creeper in October.

 

There is no royal robe so purple as common asters.

 

There is no gold so precious as sneezeweed. Or one of a dozen or more native goldenrods.

 

Somehow, even the oranges and ambers seem more vibrant and alive when glimpsed from the inside of one of the old munitions bunkers remaining from the Joliet Arsenal days.

 

And is there any more handsome head dress to be found than atop a white-crowned sparrow?

 

Is there any more hopeful sign of the prairie’s recovery than the imminent return of bison?

 

Just as hopeful and beautiful are the tiny creatures that call Midewin home, such as this banded garden spider backlit while suspended within its translucent web.

 

I am not alone this sacred day. Nor should I be. Midewin is a welcoming place for birders, hikers and horse-people, alike.

 

Midewin is a place of retreat and refuge and rejuvenation. And even as the prairie grasses and flowers begin to fade, I find great comfort and strength in their sending their energy underground, into their roots, deep into the prairie soils. So, too, as I walk through the autumnal prairie do I feel my own energies at one with the healing earth of Midewin. I am grateful for this fall.

 

Prairie Orrery

Arthur Melville Pearson w/ moon

Ever gaze skyward and wonder how the solar system works? Of course you could go to the Adler Planetarium to ponder North America’s largest collection of astrobales, armillary spheres and other devices built throughout the centuries to help explain how the stars and planets wheel about the heavens.

Or you could head out to Midewin to gaze up at prairie dock – a living orrery of the prairie.

An orrery is a mechanical model of our solar system. It demonstrates how the planets move about the sun. The oldest known such model is of Greek origin and dates from about 150 B.C.E. The first “modern” orrery was built in 1704 in England and presented to Charles Boyle, Fourth Earl of Orrery, hence the name.

Prairie dock, on the other hand, is the largest member of the tallgrass prairie family Silphium. At its base are rough, elephant ear-like leaves from which rise a bare, slender stalk up to 10 feet in height. Atop the stalk are several branches, each terminating in a green bud the size of a melon ball.

Once the first bud bursts forth in a dazzling yellow flower, it takes little imagination to see it as the sun and the remaining buds as planets. Certainly this botanical orrery lacks the clockwork precision of its mechanical counterparts. But stare up at it long enough and you can’t help but see our entire solar system in a single Silphium terebinthinaceum.

Stare a little longer and you can’t help but notice that there are countless prairie docks and related family members of Silphium in bloom. Just as there are countless solar systems and galaxies beyond our own. The infinite wonder of our universe reflected in the recovering prairie lands of Midewin.

All this would be more than a little mind blowing were it not for the humble bumble bee. Collecting nectar and pollen from the prairie dock blossom in front of you, he brings you back to earth. To the here and now.

Another magic moment at Midewin.

Through the Lookingglass

Midewin is a window into our prairie past. But look closely and you’ll see it is also a lookingglass through which we may step back in time – millions of years ago – when much of North American was emerging from a shallow inland sea.

As a habitat, prairie is the new kid on the block. Following the retreat of the last glaciers, prairie emerged in North America about 8,000 years ago and continued to evolve until we plowed it all up. Beginning in the early 1800s, it took little more than a century for us to destroy 99.9 percent of the prairie in Illinois.

Since the establishment of Midewin National Tallgrass Prairie in 1996, the US Forest Service and its nonprofit partners and volunteers have recovered nearly 5,000 acres of native prairie habitat. That’s about twice as much as exists in all of the other prairie remnant sites combined throughout the entire state.These big open spaces at Midewin provide critical habitat for imperiled grasslands birds, such as this young dickcissel still getting the hang of how best to perch on the jungle gym stems of rattlesnake master.

There are now nearly 350 plant species flourishing at Midewin, including common milkweed, a critical food source for increasingly uncommon monarch butterflies.

Beyond the birds and butterflies, there is a family of bugs (with apologies to entomologists, but the alliteration was too tempting) that likewise call Midewin home and speak to its more ancient habitat roots.

For much of its history, Illinois – in fact most of North America – lay under a warm, shallow ocean. About 325 million years ago, the waters began to recede, leaving in their wake a delta swamp. According to the Illinois State Geological Survey, the great delta forests of the time were patrolled by “dragonflies as big as hawks.”

Dragonflies were among the first winged creatures to evolve over 300 million years ago – before birds. Today, there are about 3,000 species of dragonflies. I’m not sure how many inhabit Midewin, but there are quite few. Including this newly emergent female ruby meadowhawk (notice the forewing not yet fully expanded and hardened.)

ruby meadowhawk on horsetail
ruby meadowhawk on horsetail

 

Note, too, that the meadowhawk is perched atop a spore-bearing cone of common horsetail, itself among the oldest surviving plant families. By the time horsetails appeared – about 150 million years ago – so, too had dinosaurs.

Unfortunately, weathering and erosion are the likely culprits as to why there are no dinosaur fossils yet discovered in Illinois. However, evidence of the ancient coal forests of 325 million years ago remains underground in nearby Coal City, named for the coal that formed as a result of trees and other plants being buried in mud and compacted over time.

Evidence of the ancient shallow seas likewise remains underground within the very footprint of Midewin – in the form of dolomite that was formed of billions upon trillions of seashells. In some areas, this dolomite remains very near to the surface, which underpins a distinct and very rare type of prairie.

Above ground at Midewin, evidence of its ancient past lives on in wetland stands of horsetail and the many different kinds of dragonflies that hunt their prey (and sometimes mate) on the wing, just as they did millions and millions of years ago.

Male twelve-spotted skimmer
Male eastern amber wing
Lancet clubtail
Female common pondhawk