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How do soil, water, plants and animals connect here? Follow one connection at a time, above and below the ground.
Follow one connection
Two landscapes make one living system.
Forested peaks meet wide open prairies, and rugged clay formations rise from ancient seabeds. Every plant, animal, soil type and weather pattern plays a part in how the region lives.
This page starts under the prairie grass and works up to the hawks overhead, so you can trace one connection at a time. For the rock underneath it all, see our Geology guide.
Most of the prairie is out of sight, under your feet. Here is the chain from a summer storm to a hawk in the sky.
Short, heavy summer storms drop rain that soaks into the soil and helps the grass grow.
Deep grass roots reach far below the surface for water in dry spells, and they hold the soil so it wears away more slowly.
Bison and pronghorn graze the grass, and the bison's grazing helps native grasses thrive.
Prairie dog burrows shelter other animals, and hawks hunt over the prairie dog towns.
Each step depends on the one before it, so a dry year or a lost prairie dog town changes everything after it. Pick one connection below to see it up close.
Each of these is one real connection on the prairie. Choose one to see what it does and what to look for.
Choose a connection. The photo and notes change with your choice.
Sudden summer storms bring brief, heavy rain. The water soaks into the soil, and prairie grass roots reach far below the surface to find it again in dry spells.
A single patch of green growing after a hard rain.
The roots also hold the soil in place. That matters in the Badlands, which wear away faster than almost anywhere in North America.
Bison graze the prairie grasses, and their grazing helps native grasses thrive. Their movement across the land supports the health of the whole prairie.
A herd moving slowly as it feeds. Watch from the vehicle, or from at least 100 yards away on foot.
Grass feeds the bison, and the bison keep the grass healthy. Pronghorn graze the same open prairie.
Prairie dogs are a keystone species, which means they shape far more than their numbers suggest. Their burrows change the soil and the way water flows, and they shelter other animals too.
Mounds of bare dirt spread across short grass, with prairie dogs standing up to watch.
A town feeds and shelters birds, insects and other mammals, and it draws the hunters that eat prairie dogs.
Bees, butterflies and hummingbirds move pollen from flower to flower, and that keeps plant communities healthy.
Bees working the purple bergamot in a summer meadow.
Flowers feed the pollinators, and the pollinators help the flowers make seed for next year.
A hawk circling above a prairie dog town is hunting. Prairie dogs use different calls for coyotes and for birds of prey, and when one call changes, the whole town reacts.
A hawk circling, then prairie dogs dropping into their burrows all at once.
Hunters like hawks and coyotes help keep prairie dog numbers steady. That is the balance between predator and prey.
A habitat gives wildlife food, water, shelter and space. These three do it in very different ways, so they hold different life.
In the Black Hills, a sunny, dry rocky slope can sit just a few steps from a shady stream, so many communities live close together. Our private Wildlife Tour of the Black Hills goes through Custer State Park.
The two places are connected, and life in each one works in its own way.
 Black Hills |  Badlands | |
|---|---|---|
| Climate | Cooler, with higher ground and shaded slopes that hold moisture. | Hotter, windier and drier. |
| Soil | Granite and limestone break down into richer, more stable soil. | Clay and volcanic ash make fine, powdery ground that shifts with wind and water. |
| Plants | Dense ponderosa pine forest, meadows and wildflowers. | Hardy grasses, shrubs and drought-tolerant flowers. Heat and dryness limit trees. |
| Wildlife | Elk, deer, mountain goats and many birds move between meadows, ridges and sheltered draws. | Animals move along drainages, ridge lines and prairie dog towns, and they time their days to avoid the heat. |
A few ideas about how this land works are only half right.
You might thinkAll fire hurts the forest.
What we see hereFire is a natural force in the Black Hills. It clears undergrowth, recycles nutrients and helps keep the forest healthy, and new growth starts again after it.
You might thinkSo every fire is good for the forest.
What we see hereNot every fire. When fire is kept out for a long time, the undergrowth builds up, and that can make larger wildfires more likely.
You might thinkGrazing just wears the prairie down.
What we see hereBison grazing helps native grasses thrive, and the herd's movement supports the health of the prairie.
You might thinkEvery habitat here works the same way.
What we see hereBison do well on open prairie, bighorn sheep prefer steep, rocky ground and forest animals rely on tree cover. Each habitat supports different life.
Weather touches every connection above. Summer storms bring the rain that grows the grass, long stretches of heat change where wildlife finds shade and water, and winter snow gives the soil the moisture that fuels spring growth.
Some changes are subtle. Birds change their routes with shifting winds, wildflowers respond to cool spring nights, and animals time their movements to storms and seasons. Our Weather guide has practical tips for travelers.
People change this ecology in ways visitors often miss. Trails, roads, noise and foot traffic all change how animals move and where plants can grow, and in the Badlands the clay crumbles easily underfoot.
Staying on trails, giving animals space and keeping natural areas clean help these places recover. Our Safety, Preparation and Travel Tips pages give simple steps. For places of cultural significance, the Sacred Sites guide provides extra context to help you navigate respectfully.
Many traditional teachings in Indigenous communities describe the Black Hills and Badlands ecology as interconnected living systems, a perspective explored further in the Indigenous History and Cultural Perspectives guide.
Here are nine ecology terms and what they mean in this region.
| Term | What it means | In this region |
|---|---|---|
| Adaptation | A trait or behavior that helps a plant or animal survive where it lives. | In the Badlands, many species rely on ways to get through drought. |
| Biodiversity | The variety of plant and animal life in an ecosystem. | The Black Hills have more variety than the prairies around them, because of their cooler climate and varied ground. |
| Ecosystem | A community of living things and the place that supports them. | Forest, prairie and Badlands each have their own relationships. |
| Habitat | The area that gives wildlife food, water, shelter and space. | Habitats shift between meadows, rocky slopes, prairies and river bottoms. |
| Keystone species | A species with an outsized effect on its ecosystem. | Prairie dogs shape soil, water flow and the survival of many other animals. |
| Microclimate | A small area where temperature, moisture or sunlight differs from the land around it. | The Black Hills have many, because of their height and terrain. |
| Pollinator | An animal that moves pollen between flowers. | Bees, butterflies and hummingbirds keep plant communities healthy. |
| Riparian area | The land along the banks of rivers and streams. | These areas are rich in plants and draw wildlife looking for water and shade. |
| Succession | The natural change in plant communities over time. | After a fire, new growth starts a cycle that leads back toward mature forest or prairie. |
Some of the clearest lessons come from quiet moments on the trail. Early mornings in the Black Hills often start with the smell of pine and a soft, rising breeze, and birds call from the forest edges as sunlight filters through the branches.
On mornings like that, you notice how a shift in wind brings new sounds, and how some flowers open only when the air warms.
The Badlands teach differently, because their wide, open spaces make every movement stand out. You might see a hawk circling above a prairie dog town, or a single patch of green after a hard rain, and you start to see how resilient these systems are.
If you would like to see these connections in person, we offer private tours that move at a human pace.
Our private Wildlife Tour of the Black Hills runs April 15 to October 15 and goes through Custer State Park.
Our private Mount Rushmore and the Big Badlands Tour goes into Badlands National Park.
Our Badlands Sunset and Golden Hour Tour also goes into Badlands National Park.
Ecology is the thread that holds many of these stories in place. If you're curious about how culture and relationships influence the land, the Indigenous History and Cultural Perspectives guide offers thoughtful context.
If you’d like to learn more about the ecology of the Black Hills and Badlands, there are excellent resources that deepen your understanding of how these landscapes function. These organizations study plant communities, wildlife behavior, water systems, and long-term ecological patterns that shape the region. Their work supports conservation efforts and helps visitors appreciate the land with greater awareness.
Exploring these resources is a natural next step for anyone curious about how ecosystems evolve and how humans can support their health. The links below lead to science-based, easy-to-use information that complements everything you’ve read in this guide. They also provide regional context that can enrich your experience on any trail, overlook, or open stretch of prairie.
Recommended Ecology Resources:
South Dakota Game, Fish & Parks – Wildlife and Habitat Information
The Nature Conservancy – Northern Great Plains Conservation Work
South Dakota State University Extension – Grasslands and Plant Communities
Audubon Society – Regional Bird Habitats and Migration Patterns
World Wildlife Fund – Northern Great Plains Ecology Overview
Exploring the ecology of the Black Hills and Badlands becomes even more meaningful when you move through the land with awareness. Understanding how plants, wildlife, soil, and weather interact helps you recognize the subtle details that make each place unique. A well-prepared visit supports both your experience and the health of the ecosystems you’re stepping into. Simple choices like staying on trails, carrying enough water, and keeping at least 100 yards from any wild animal help protect the land and keep you comfortable during your journey.
If you’d like to experience these places with someone who knows the rhythms of the region, My XO Adventures offers small private tours designed to help you see things you might otherwise miss. We move at a relaxed pace and focus on the connections that bring the landscape to life. You’re always welcome to join us for an experience shaped by curiosity, care, and a deep respect for the land.
The Black Hills and Badlands aren’t just dramatic landscapes. They’re living systems shaped by climate, elevation, fire, grazing, and time. This FAQ helps you understand how plants, animals, soil, and weather interact to create two very different but connected ecosystems.
The Black Hills are higher in elevation and support dense forests, streams, and cooler microclimates. The Badlands are drier, more exposed, and dominated by grasslands and eroding sediment formations. One is forest-based, the other prairie-based.
Elevation and moisture make the difference. The Black Hills receive slightly more precipitation and have shaded slopes that retain moisture. The Badlands are hotter, windier, and drier, which limits tree growth.
Fire is a natural ecological force in the Black Hills. It clears undergrowth, recycles nutrients, and helps maintain forest health. Suppressing fire for long periods can actually increase risk of larger wildfires.
Prairie grasses have deep root systems that reach far below the surface, allowing them to access moisture even in dry periods. Those roots also stabilize soil and reduce erosion.
Yes. Bison thrive in open prairie. Bighorn sheep prefer steep, rocky terrain. Forest species rely on tree cover. Habitat diversity across the region supports a wide range of wildlife.
The sedimentary rock is relatively soft. Rain, wind, and temperature swings break it down quickly, constantly reshaping ridges and slopes.
Spring brings new grass growth and active wildlife. Summer intensifies heat and dryness. Fall cools the landscape and shifts plant color. Winter simplifies the system, slowing biological activity but not stopping it entirely.
Stay on trails, keep at least 100 yards from any wild animal, pack out trash, and resist climbing fragile formations. Small choices help protect both plant life and soil stability.
This guide was written by Daniel Milks, owner and guide at My XO Adventures. Years spent exploring the Black Hills and Badlands have shaped his understanding of the region’s ecology, from the quiet resilience of prairie grasses to the way forests change with the seasons.
Daniel studies these landscapes by spending time in them, observing how weather, wildlife, and plant life interact day after day. His approach blends curiosity with respect, helping visitors see the land as a living system rather than a collection of separate sights.
Daniel believes that travel should inspire connection. When he guides guests through the hills, prairies, or Badlands, he shares stories that help them understand why these places matter and how they continue to evolve. His experience in the field informs every aspect of the Visitor Learning Center.
If you’d like to learn more about his background and philosophy, visit the Author Page, which introduces the person behind My XO Adventures. Daniel has led private educational tours in the Black Hills and Badlands for over 5 years.
