Bison, Bingo, and Other Bits and Bobs

A bison bull at the Niobrara Valley Preserve this week

Today, I want to share a bunch of announcements, a wonderful surprise I received last night, some photos from this week’s trip to the Niobrara Valley Preserve, and some spring/summer prairie bingo cards. Thanks for your patience with this omnibus post.

I’ll start with an invitation to volunteer at The Nature Conservancy’s Platte River Prairies or Niobrara Valley Preserve. If you’ve always wanted to come visit one of these sites and also enjoy contributing to conservation efforts, here’s your chance! (If you just want to come visit and NOT work, you’re also welcome to do that, and both sites have public hiking trails just waiting for you.)

At the Platte River Prairies, we host volunteer workdays twice a month throughout most of the year. You can find more information on those workdays here. At the Niobrara Valley Preserve, Kate Samuelson, our outreach coordinator is going to start hosting volunteer days this summer. She created a flyer (below) with the information you need to know. Possible NVP volunteer days include June 6th and 10th and July 18th and 29th. At both sites, we may be able to provide overnight housing for people traveling from far away.

In addition to volunteering and hiking our public trails, another opportunity to visit and learn will come on July 11, 2026, which is the date of our next public field day at the Platte River Prairies. I’ll share more information later, but please save the date if you’re interested. It’ll be a terrific opportunity to meet our staff, explore both restored and remnant (unplowed) prairies, and learn prairie ecology, research, and land stewardship.

We will also be hosting four habitat workshops this summer, aimed at land owners and land managers. At those workshops, we share what we’ve been learning about fire, grazing, restoration, and other stewardship practices, as well as a good dose of plant identification practice. If you’re interested in attending one of these free workshops, please contact Kate for more information (see her contact info in the above flyer for the NVP volunteer days). Habitat workshop days will be June 9 and August 18 at the Platte River Prairies and May 19 and August 11 at the Niobrara Valley Preserve.

If you’re looking for something to entice you out on a hike in the prairie, either at one of our sites or in any other prairie, I’ve created some bingo cards for the spring and summer seasons. I had a surprising number of people thank me for the last batch I made, so I hope these will be similarly helpful. There are three bingo cards at the end of this post, each with the same items to find, but in different locations on the card, in case you have multiple people and it’s helpful to non-identical cards. Look, don’t let me tell you how to have a good time in prairies – I’m just giving you options!

Lastly, before I just dump a bunch of recent photos on you, here’s the terrific surprise I received last night. Many of you will know about Wild Green Memes For Ecological Fiends. If you’re on social media and you’re not aware of that group, I’m not sure why you’re on social media. Wild Green Media also has other platforms, including their Wild Green Streams podcast, on which I appeared last year.

Well, anyway, Rhett Barker, founder of the Wild Green Memes for Ecological Fiends, executive director of Wild Green Future, and the person who interviewed me on their podcast, sent me an email last night. Apparently, after hearing about my square meter photography project, he was inspired to try his own (12-hour) version. The resulting 10-minute YouTube video is fantastic and I wanted to share it here. If the video link below doesn’t open for you, please click on the title of this post above to open it online and that will make the link active.

Ok, on to photos… Here is a batch of images from the Niobrara Valley Preserve this week:

Bison and cowbirds in Sandhills prairie
A young bison calf giving me the sideeye
Mom and calf
A calf young enough you can still see the remnant of its umbilical cord
Bison fur along one of the many creeks the animals visit for water (along with other water sources we provide for them)
A paper birch log along a spring-fed stream
A riparian oak woodland recently cleared of (most) eastern red cedar trees to improve habitat conditions
Grasslands on the north side of the Niobrara River – Dakota mixed-grass prairie
The last pasque flower (Pulsatilla patens) I saw in bloom on the north side of the river.
Most pasque flowers have produced fruits/seeds now.
A close-up of a pasque flower seed head
One of many crab spiders hanging out in pasque flower seed heads
A different spider on a different pasque flower
Sun sedge (Carex inops) with fruits. This sedge is one of the most abundant plants at the Niobrara Valley Preserve.
Sand cherry (Prunus pumila)
A juvenile female black widow spider on her web in an abandoned prairie dog burrow.
A pair of bald eagles sitting together at sunrise

Finally, as promised, here are some bingo cards you can print out or otherwise utilize to add a little extra fun to your prairie explorations this summer. Each card has the same squares/items, but in different orders/locations. Enjoy!

Perspectives of the Prairie: Jennifer Rumery and Karen Hemberger

Hi everyone.  The following blog post is written by 2024 Hubbard Fellow Claire Morrical.  Claire put together a fantastic series of interviews with people working in conservation here in Nebraska and we thought you’d enjoy reading and listening to their stories. 

This project – Perspectives of the Prairie – uses interviews and maps to share the perspectives and stories of people, from ecologists to volunteers, on the prairie. You can check out the full project HERE.

This post also contains audio clips. You can find the text from this blog post with audio transcripts HERE. If you’re reading this post in your email and the audio clips don’t work, click on the title of the post to open it online.


Jennifer and Karen have volunteered at Platte River Prairies for over 10 and 20 years, respectively. After a volunteer day of gathering mountain mint seeds, Jennifer, Karen, and I sat down to discuss the healing and learning they get from the prairie, what makes volunteers unique, and to share stories of young volunteers connecting to the prairie.

Volunteers harvest seed in East Dahms (photo: Chris Helzer)

Interview: November 2nd, 2024

Part 1: Meet Jennifer

It’s an overcast Saturday in November and I’m sitting outside the Platte River Prairie’s main office waiting for volunteers to arrive. In a white pickup truck, there’s a handful of five-gallon buckets, leather gloves, and a couple pairs of gardening clippers. It’s a seed collection day.

Throughout the year, we collect and stockpile native prairie seeds from our sites, to be scattered back on our prairies in the following years.

In the past, we’ve used most of our seed for restorations, returning crop fields to prairie. With no seed bank in restorations, no prairie seeds lying in wait under the soil until conditions are just right to emerge, we start from scratch. As a result, we needed a lot of seed. Seed collecting meant having four five-gallon buckets strapped to you as you tore your way through the prairie, trying to fill a bucket every 5 to 10 minutes.

This year we have no active restorations. During these years, we use seed to help our sites along, bolster the plant community, fill in patches. With less demand for seed, seed collection is a much more social affair. 

It’s one of the last weeks to find much seed as the prairie creeps towards winter dormancy, and our volunteer, Karen Hemberger, has led us to where she recalls seeing our day’s targets, New England Aster and Mountain Mint. We meander through the wildflowers and grasses, chatting as we scan for plants. By the end of two hours, we’ve collected a 5-gallon bucket’s worth of seed between the four of us. But we’ve accomplished our primary objective, spending time in the prairie and spending time together.

Afterwards, I sat down with two of our volunteers, Karen Hemberger and Jennifer Rumery, to talk about their experiences working at Platte River Prairies.

This is Jennifer-

Notes for Context:

  • Mardell Jasnowski: Worked as a land steward at Platte River Prairies and continues to help as a volunteer
Prairie gentian (Eustoma grandiflorum), a wildflower that Jennifer especially likes (photo: Chris Helzer)

Overseeing volunteer days is the responsibility of Hubbard Fellows, including myself (year-long employees getting early career experience at Platte River Prairies). During our first volunteer days, seasoned volunteers like Jennifer and Karen are amazing guides as we get our footing, ready for any task and happy to answer questions along the way.

 Jennifer has been a volunteer with us for about 10 years. Both she and her husband, Grant, help us at PRP.

Notes for Context:

  • Brandon Cobb: One of the 2022 Hubbard Fellows (you can hear from him HERE)

Part 2: Meet Karen

Location: The Derr Sandhills site at Platte River Prairies

Karen Hemberger is another long-time volunteer who’s helped us for over twenty years and is her own force of nature when it comes to seed collecting.

Notes for Context: Karen mentions “keys to the house”. Our main office, the Derr House, is an extremely 70’s brick house that past landowners sold to us in the 2000’s

  • The Crane Trust: A conservation non-profit and preserve to the East of Platte River Prairies
  • Chris Helzer: Director of Science and Stewardship for Nebraska TNC. Chris has spent much of his career at Platte River Prairies
Male blue sage bee (Tetraloniella cressoniana), a specialist of pitcher sage (Salvia azurea). Karen especially likes this wildflower (photo: Chris Helzer)

Through learning and growing and sharing, Karen’s passion for this work is unending. She is fierce in her love for the prairie and tender in her approach to caring for it.

Notes for Context: Karen mentions a plant named sweet clover. Depending on where you are in the United States, sweet clover is either a very invasive species (a non-native plant that outcompetes native plants), or a non-native plant of little concern. In central and western Nebraska, we tend not to worry very much about sweet clover. It is abundant when there are few plants competing with it, but makes way when other species move in.

Karen is referring here to Chris Helzer.

Plants mentioned: Sweet Clover (Melilotus officinalis), Sun Sedge (Carex heliophila)

An ant colony on a large anthill

Part 3: Healing and Learning

Location: The site Caveny at Platte River Prairies

Karen and Jennifer are reflective on what they receive in return for the time that they give. They take something home with them, and for Jennifer, that something carried her through her work as a school psychologist

Sandhill cranes flying off from the river

Every spring, hundreds of thousands of sandhill cranes pause their migration north to eat their fill of invertebrates and corn along the central Platte River (where we are). They store the energy they’ll need to hatch and raise chicks in the coming months. At the migration’s peak, there is a constant trill of cranes calling in the mornings and evenings. When they fly to the river to roost for the night, the line of cranes, wing to wing, can stretch from the eastern to the western horizon. This great migration of sandhill cranes is followed closely by the endangered whooping cranes.

For many, even those who have watched the cranes year after year, seeing them return in the spring can be a deeply impactful experience. Jennifer finds meaning in her own experience with the cranes. For both Karen and Jennifer, time spent in the bluestem and switchgrass and sunflowers has shaped the way they take care of themselves and others.

In addition to healing, spending time in the prairie has helped shape how and what Karen and Jennifer see.  

Plants mentioned: Pussy Toes (Antennaria neglecta), Star grass, Blue-eyed grass, Pale spike lobelia (Lobelia spicata)

Four-point evening primrose (Oenothera rhombipetala) in sand prairie at The Nature Conservancy’s Platte River Prairies (photo: Chris Helzer)

Part 4: The Youngest Volunteers

Location: The site Derr West at Platte River Prairies

Jennifer and Karen share special moments watching young volunteers experience the prairie.

Notes for Context:

Plants mentioned: Milkweed (Asclepius sp.)

Common milkweed seeds (photo: Chris Helzer)