Welcome to our Field Notes Blog! Here you will find local environmental and natural science news for our northern Illinois region and beyond.


September 3, 2025
As the summer camp season comes to a close, creek shoes are dried, crayons are put away, and our staff reflect on their summer of directing and supporting Severson Dells camp. This summer, they led and assisted with 9 weeks of summer camp programs that reached 211 campers! Out of the many adventures this season, here are some of their highlights and what they learned along the way.
By Emma Zimmerman August 26, 2025
When I started at Severson Dells nearly two years ago, I never would have believed I’d still be here today. What was supposed to be a short detour turned into one of the meaningful positions I have served. These years have flown by, and as I sit down to write this farewell, I keep circling back to my early days here. It feels important to revisit that beginning, because in so many ways, it shaped everything that followed.
By Shannon Osadjan August 26, 2025
While my time at Severson Dells is coming to an end, my time and experience as a junior naturalist is just beginning. When I accepted this job position, I was a recent college graduate who was ready to get into the environmental work force but didn’t know where to start. Here I am, a year later, and I feel ready and excited to take on whatever comes my way. Last September, when I first started working here at Severson Dells, I didn’t know what to expect. I had never been an educator before and I was nervous about my skill-set, but I pleasantly surprised myself. I found myself enjoying teaching, and the goofy experiences and questions that came with it. When I started here, my biggest goal for myself was to become better informed about the ecology of Rockford, and being more aware and able to identify what’s growing around me. A year later, I am proud of myself and how much I have learned. Because of my schooling background being in geology, I already had a familiarity with looking at the outside world in a different lens. I know how to look at the geology and the basic layout of an area to understand the depositional environment, or what the land most likely looked like back in the day. However, being at Severson Dells for the past year has shown me how to appreciate nature and the outdoors in a new way, in a biological sense. I now know how to look at the ecology of an area and see how the plants are working together, and how this compliments what the birds and the bugs are doing, and how the trees play a role too, and this cycle keeps going. I knew forests were interconnected, but I feel like I truly get it now. It’s helped me to connect the pieces of nature that I wasn’t aware of before, and put them all together now to see a new, bigger picture. Severson Dells is a place I will always hold dearly to me. The experiences I had, the challenges I overcame while being here, and the personal growth I’ve been able to experience: all of this helps shape my love for this lovely forest preserve here in Northern Illinois. I want to be sure to express my appreciation for the staff here at Severson Dells Nature Center, and the kindness they always treat everyone with. The people here are always so willing to help me with learning new skills, diving into intimidating science topics, and trying to help foster that curiosity that everyone has inside of them. As I close this chapter, I feel inspired and grateful for the connections I’ve made, and ready for what the future has in store for me.
By Sydney Sherbitsky August 26, 2025
I’m sitting at my desk listening to the distant chatter of kids outside and the excited murmuring of my coworkers. I am surrounded by tokens of memories - a sticker from the rot museum and a walnut shell owl I made with campers. On my computer screen, a half edited video about the Grove. In my desk drawer, a stack of lesson plans I once felt nervous to teach, but I now know by heart. Next is the bigfoot code from the cryptid hike, handwritten notes from my coworkers, and the spot where my notebook lives. This notebook has been with me from the start of this position and is full of the many things I have learned at Severson Dells. As my time here comes to a close, I flip back through the pages and reflect on what the past year has taught me…
By Linda Sandquist August 7, 2025
As we observe National Make-A-Will Month this August, I want to relate a personal story about preparing my own will. Have you ever heard the saying “the cobbler’s children have no shoes”? Up until a month ago, this statement described me since my husband is a lawyer and we had no will or estate plan. I counted myself in good company when I learned that Abraham Lincoln, Picasso, Sonny Bono, and Aretha Franklin all died without a will. And I had a lot in common with the 72% of Americans who have not officially spelled out what should happen to their assets upon their death. Wills and estate plans are easy to put off. They feel too complicated, too time-consuming and too official. And frankly it’s not much fun to think about who should get what, knowing that at least one person is going to be disappointed and someone will most likely think they were left with the short end of the stick. While a will can’t soothe hurt feelings, one with a named executor will speed up the probate process and ensure that your wishes are fulfilled. Creating a will doesn’t have to be time-consuming or difficult - there are many resources online to help you write a document that needs only to be witnessed and notarized. The resources I found were free, very helpful, and very legal. Steps were simplified and I completed my will in less than an hour. If your wishes are more complicated, finding an estate attorney is also easy and can be very affordable. Another benefit of making a will or estate plan is that you get to decide what charities and nonprofit organizations will receive a final gift from you. If you’ve been a passionate supporter of something over your lifetime, wouldn’t you like to give them a final gift that really means something? It’s easy to direct a certain dollar amount or a certain percentage of your estate to an organization you really care about. And the organization is bound by law to follow your intentions - you can choose whether you want your gift to go to a certain program, operations and overhead, building maintenance, or an endowment fund. Equally as impactful, is making your favorite charitable organization the beneficiary of your retirement fund, IRA, or life insurance policy. Here at Severson Dells Nature Center, we ask that you consider including us in your estate plans. When you do, you become part of our Heritage Society, a group of like-minded folks, dedicated to the future of nature education in our region. Your gift, large or small, will make a difference. In 2016, a bequest from Orville and Ruth Varland to Severson Dells created an endowment fund to support field trips for students from the Rockford Public Schools. The fund has grown over time and continues to make a difference in the lives of young people who come to the Dells, many experiencing nature for the first time. Each year, students who have never been in a forest, seen a natural creek, or sat in the grass are here because of the Varlands. The legacy of Orville and Ruth lives on and on and on. I invite you to celebrate and Make-A-Will this month. Take the time to look for online resources or contact your attorney. Make sure your intentions are clearly written down so that when the time comes, there is no question about what you wanted. Please consider including Severson Dells in your will and join our Heritage Society. And let us know that you included us so we can thank and celebrate you now! If you've already considered Severson Dells in your estate plans, let us know! Email me at linda@seversondells.org or call me at 815-335-2915. * Please note: Severson Dells Education Foundation is not a legal entity and cannot give legal advice. We encourage you to seek out legal advice should you have any questions about the process of making a will or leaving an estate gift. Our Tax ID number is 36-2985870
By Sydney Sherbitsky July 16, 2025
Summer days have an intense energy. For us, it’s easy to pack a lot of activity into long, sunlight-filled days. The atmosphere is packed in a different way, with thick, heavy humidity and sun-baked heat. You have probably experienced one of these particularly sweltering days where periods of calm are interrupted with a sudden summer storm. One moment you are relaxing, the next, you hear the rumbling of thunder, and it begins to rain, instantly cooling the hot ground and taking the stickiness from the air. You don’t have long to take in the scene as the intensity of the heat gives way to an intense storm. This is a different kind of energy in the air; this is a summer storm.
By Shannon Osadjan July 3, 2025
Nature holds the answers for how to be more efficient with managing our supplies of earth’s natural resources. In fact, nature serves as the inspiration and blueprint for many structures and objects we use every day! Biomimicry is a practice of engineering that creates designs based on structures and sequences from the Earth’s natural world, including but not limited to plants, animals, and geographies. Biomimicry designs are meant to imitate functions that already exist and occur in nature. These designs are being transferred over and scaled up to provide solutions to human caused problems. There are three main core principles that make up biomimicry: recreating natural shapes, processes, and entire ecosystems.
By Alex Lunde June 26, 2025
*please note: This blog was adapted from a blog series authored in 2023.
By Shannon Osadjan June 18, 2025
How to Safely dispose of common corrosive and hazardous household materials
By Emma Zimmerman June 12, 2025
When you think of summer in Illinois, you might picture swaying prairie grasses, tall oak trees, and, if you’re outside long enough, bugs. From the fireflies that light up July evenings to the pesky mosquitoes biting your ankles during a bonfire, insects are an inescapable part of our landscape. But they’re not just a buzzing background, bugs play essential roles in our ecosystems, gardens, and food systems. While some invasive insects threaten local biodiversity, most bugs are crucial contributors to a healthy environment. Insects are often overlooked– or worse, feared–but many are performing essential ecological services every day, and they deserve our thanks!
By Sydney Sherbitsky June 5, 2025
As a New Yorker who has had the opportunity to be in the Midwest for the first time since I moved here in October, there has been no shortage of environmental wonders to explore to my heart’s content. Here is my list of the wonders of the Midwest, which includes a few places I have visited and a few places I have yet to check out. All of these gardens and parks are within Rockford or a 3-hour drive of Rockford, perfect for a day trip!
By Jillian Neece June 2, 2025
Please note: This blog was originally published by Jillian Neece on August 10, 2023, but has been updated to reflect numbers as of June 2, 2025. This summer, like every summer at Severson Dells, has been filled with laughing campers, stunning prairie wildflowers, and explorations in the creek. But this summer has also brought record breaking heat and some of the worst air quality the area has ever seen due to wildfires in Canada and the western United States. There are currently 174 active wildfires burning throughout Canada, and 44% of those are considered “out of control.” In the United States, there are currently 7 fires burning throughout 6 states, and only 3 are considered contained. Most experts predict that many of these fires will continue throughout the summer and fall. So, I figured it was time for a deep dive on wildfires!
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