Monthly Archives: June 2026

The Value of a Hole in a Tree

Most people walking a nature trail probably wouldn’t give a second thought to a hole in an old tree. A few days ago, while hiking through a small nature preserve near my home, I stopped to look more closely at this one.

As a biologist, I immediately recognized it as a cavity likely excavated by a Pileated Woodpecker. These impressive birds, nearly crow-sized, use their powerful bills to carve nesting and roosting cavities into dead or declining trees.

But what caught my attention wasn’t just the woodpecker. It was the reminder that this hole represents something much larger: the importance of leaving some dead and dying trees standing whenever they do not pose a safety risk to people, homes, or other structures.

Wildlife biologists often refer to birds as either primary cavity nesters or secondary cavity nesters.

Primary cavity nesters, such as Pileated Woodpeckers, Downy Woodpeckers, and Hairy Woodpeckers, create their own nesting cavities. Secondary cavity nesters, however, cannot excavate cavities themselves. Species such as Chickadees, Bluebirds, Tree Swallows, some owls, and even certain ducks depend on cavities that have already been created by woodpeckers or formed naturally through decay.

In many ways, woodpeckers serve as nature’s carpenters. Their work provides homes not only for themselves, but for an entire community of wildlife that follows.

And the story doesn’t end with birds.

Tree cavities may also shelter squirrels, bats, flying squirrels, raccoons, insects, salamanders, and countless other creatures. What appears to be a simple hole in a tree is actually a valuable piece of habitat.

As people, we often focus on living trees—and rightly so. But standing dead trees, sometimes called “snags,” play an equally important role in healthy ecosystems. A forest without a few snags is a little like a neighborhood without apartments. There simply aren’t enough places for many residents to live.

The next time you encounter an old tree with a cavity along a trail, pause for a moment. What looks like decay may actually be a sign of life. Someone built that home, someone may be living there now, and many others may depend on it in the years ahead.

Sometimes a hole in a tree tells a much bigger story than we realize.

Ron Dodson
The Nature of Things 🌿

A Walk Through Van Dyke Spinney Preserve

Yesterday evening, Theresa and I decided to take a short walk through the Van Dyke Spinney Preserve, located less than a mile from our home in the Town of Bethlehem, New York.

This 33-acre preserve was accepted by the Mohawk Hudson Land Conservancy in 2012 as part of the permitting process for a nearby residential development. What might appear to be a small tract of land on a map provides an impressive diversity of habitats, including forests, wetlands, floodplain communities, and stream corridors.

The preserve features a gently rolling one-mile loop trail that winds through mature woodlands and alongside portions of the Phillipinkill, a tributary of the Vlomans Kill, which eventually flows into the Hudson River. Along the trail, visitors encounter small bridges, seasonal wetlands, towering trees, native wildflowers, and quiet views of the stream as it meanders through the floodplain.

One of the things I appreciate most about Van Dyke Spinney Preserve is how accessible it is. Located at 246 Van Dyke Road in Delmar, New York, the preserve includes a convenient parking area and offers an easy opportunity to spend an hour immersed in nature without traveling far from home.

During our walk, the forest was alive with the soft light of early evening filtering through the canopy. Forget-me-nots bloomed along the trail edges, the Phillipinkill reflected the surrounding greenery like a mirror, and the cool, shaded woods provided a welcome escape from the day’s heat. It was a reminder that meaningful encounters with nature do not require a trip to a national park or a remote wilderness area. Sometimes they can be found just down the road.

Places like Van Dyke Spinney Preserve demonstrate the value of local land conservation. They protect water quality, provide wildlife habitat, preserve natural beauty, and offer nearby residents a chance to reconnect with the natural world. For those of us interested in conservation and stewardship, they also serve as living classrooms where we can observe, learn, and simply enjoy the wonders of nature.

As I often remind readers of The Nature of Things, stewardship begins by noticing things. A short walk on a local trail can lead to discoveries, appreciation, and ultimately a deeper connection with the places we call home.


An Email From Alaska

Yesterday morning, I opened my email and found a message warning that the federal government was preparing to offer portions of the Arctic National Wildlife Refuge for oil and gas leasing.

The message came from a conservation organization and, like many advocacy messages, it was written to encourage immediate action. My first reaction was not to sign a petition or hit the delete button. Instead, I found myself transported back several decades to a time when I was fortunate enough to play a small role in efforts to protect some of Alaska’s remarkable public lands.

For many Americans, Alaska exists only as a distant place on a map. Yet it contains some of the last great expanses of relatively intact wilderness on Earth. Vast mountain ranges, sprawling wetlands, tundra, rivers, forests, and coastlines support wildlife populations that most of us can only imagine. More importantly, many of these lands belong to all Americans.

The Arctic National Wildlife Refuge, often called ANWR, is one of those places.

What makes the refuge so important is not simply its size. It is the wildlife. The refuge provides habitat for polar bears, caribou, wolves, musk oxen, and hundreds of species of birds. Many of those birds do not stay in Alaska. They migrate thousands of miles each year, connecting the Arctic to places like New York, Indiana, Florida, and communities all across North America.

A shorebird that nests in the Arctic may stop along the Atlantic Coast. A waterfowl species that breeds in Alaska may spend part of the winter in wetlands near your hometown. In nature, everything is connected.

As I read the email, I decided to look beyond the headline. The message claimed that nearly 700,000 acres could be offered for oil and gas leasing. As it turns out, that statement is generally accurate. However, leasing land is not the same thing as drilling on it. Many additional approvals, studies, and decisions would still be required before any development could occur.

That distinction is important.

But so is the larger question.

How should lands like the Arctic National Wildlife Refuge be managed? Should they remain primarily places for wildlife and wilderness? Should portions be available for energy development? Can both goals coexist? These are not simple questions, and reasonable people can disagree on the answers.

What struck me most this morning was not the politics of the moment. It was the realization that the same fundamental debate has continued for decades. The names of the politicians change. The administrations change. The headlines change. Yet the underlying question remains remarkably constant.

What responsibilities do we have as stewards of the natural resources entrusted to us?

Throughout my life and career, I have believed that conservation is not about choosing between people and nature. It is about finding ways to improve the quality of life and the environment at the same time. Good stewardship requires information, thoughtful discussion, and a willingness to look beyond slogans and headlines.

The email I received this morning reminded me of something else as well.

The conservation decisions we make today will not only affect wildlife in Alaska. They will influence what future generations inherit, whether they live in Anchorage, Albany, Indianapolis, Tampa Bay, or a small rural community somewhere in between.

Sometimes an email is just an email.

And sometimes it serves as a reminder that stewardship is never finished. Each generation must decide what it values, what it is willing to protect, and what kind of legacy it hopes to leave behind.

That may be the most important lesson Alaska has to teach us.