This week, I’m pleased to announce that I’ve agreed on terms for a new book project with Mountaineers Books, publisher of my books Warblers & Woodpeckers: A Father-Son Big Year of Birding and Birding for Boomers—And Everyone Else Brave Enough to Embrace the World’s Most Rewarding and Frustrating Activity. My new book, scheduled for release in 2028, emerged from the epic birding trip Braden and I took through eastern Montana last summer, and focuses especially on the shortgrass prairie and birds that live there. As is so often the case, I am not the only author to be thinking about this remarkable, highly threatened landscape. Witness the new release, Sea of Grass: The Conquest, Ruin, and Redemption of Nature on the American Prairie (Random House, 2025).
In Sea of Grass, authors Dave Hage and Josephine Marcotty have created an impressive work that covers the entire sweep of human understanding and conquest of the American prairie. The authors set the stage by giving us solid background on the richness and diversity of North American grasslands. They recount the geological and climatological conditions that created our great prairies. They give us a glimpse of the remarkable number of species that live both above and below ground, comparing our grasslands favorably to the biodiversity of rainforests and coral reefs. They also explain the incredible amount of carbon that these natural systems sequester.
What really stands out in the book are the chapters documenting the breathtaking exploitation and destruction of tallgrass prairie, and how technology has managed both to raise agricultural production and create almost unimaginable environmental problems. Even as someone who has followed environmental issues all of my life, I learned an astonishing amount. Have you ever heard of tile drainage? I hadn’t, but it is a drainage system that not only allows farmers to raise abundant crops on otherwise unsuitable land, but mightily contributes to funneling harmful fertilizers and pesticides into rivers, lakes, wells, and other water sources throughout the Midwest. Scientists have established clear links between agricultural practices and the enormous dead zones that occur every year in the Gulf of Mexico. Meanwhile, hundreds of cities such as Des Moines have to spend millions—probably billions—of dollars to try to remove harmful fertilizer residues from drinking water supplies.
The authors explain that while Iowa and other Midwest states have lost virtually all of their original tallgrass prairie to agricultural conversion, the arid nature of the shortgrass prairie traditionally rendered it unsuitable for growing crops. Instead, cattle was king on these lands—including much of the Dakotas, Montana, and Wyoming. Alas, genetic engineering and other technologies have now opened up these fragile, dry lands to farming. I had thought that the great era of prairie conversion had ended, but in the US we are now losing more than one million grassland acres to the plow every year.
For anyone who cares about the incredible diversity found in these grasslands—including its remarkable suite of grassland birds—this is horrible news indeed. It also sheds a positive light on the importance of sustainable cattle ranching and “keeping grass in grass,” as one Montana biologist puts it. What makes the situation especially frustrating is that conversion of grasslands to cropland isn’t primarily driven by demand for food, but by billions of dollars of tax breaks, mandates, and other government subsidies for growing corn to produce ethanol. These subsidies arose from efforts to help America achieve energy independence. Instead, they have helped create a system that continues to destroy natural ecosystems while creating immense quantities of a product that we simply don’t need (see, for instance, this report from Wisconsin). Unfortunately, by driving up corn prices, the ethanol boondoggle has made many corn growers extremely wealthy and politically powerful, almost eliminating the possibility of rolling back this pork barrel waste of taxpayer dollars.
Fortunately, the authors don’t leave us with a totally grim outlook for America’s remaining grasslands. Throughout the book, but especially in the final section, the authors detail a number of small-scale efforts to protect and restore grasslands as well as to reduce the incredible environmental costs of modern-day agricultural methods. In Montana, these range from the creation of American Prairie to the practice of rotational cattle grazing to tribal and ranching successes reintroducing bison back onto the landscape. I don’t want to reveal too much, but I’m confident you’ll find these and other efforts as fascinating and hopeful as I have.
Although it gives fairly brief coverage to grassland birds, if you care about grassland birds—not to mention bison and grassland ecosystems in general—Sea of Grass is absolutely required reading. Especially if you live in or near the Great Plains, it provides vital insights into the huge economic and cultural forces at work in our region. As a bonus, the authors’ clean, entertaining writing style help make this one of the most worthwhile books you are likely to crack open this year.
Summary: A fascinating crash course on the biological, economic, and cultural history of America’s grasslands and the growing efforts to protect what’s left of these remarkable ecosystems.
