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The Outside Story

Gyttja: The Mud Beneath Us Reveals the Past

Most people know that the bottom of a northern lake or large pond is a mucky, muddy mess of weeds, decayed leaves, some rocks, and a few crayfish to avoid stepping on while wading. This area…

Creating Caches: Winter Preparation

On a recent walk in the Maine woods, I heard a red-breasted nuthatch calling softly to itself. It was 6 feet above me in a large white pine, climbing down the tree headfirst. Looking through…

Nematode Nemesis: The Hidden World of Carnivorous Fungi

In darkness, a wormlike creature squirms. A tiny nematode weaves its way between grains of rock and particles of organic matter, through inverted forests of tree roots. It follows what it…

Not So Bird-Brained: Avian Tool Use

On an otherwise unremarkable day in 2023, Jason Love and his colleagues were gathering in a parking lot when they saw something that, as far as we know, no one had ever seen before. Love, the…

Black Locust: An Invasive with Roots?

The coming of autumn often makes trees harder to identify – but sometimes, it does the opposite. The black locust (Robinia pseudoacacia) is a case in point. In summer, its bluish-green,…

In the Footsteps of a Chipmunk

As autumn nears, I find myself returning to botanist Robin Wall Kimmerer’s line in Gathering Moss where she describes ecological succession as “a tale of the interwoven fates of…

Sumac Galls: An Ancient Association

The staghorn sumac (Rhus typhina) is a ubiquitous shrub of human-impacted northeastern habitats. Sumac stands occur along most highways and county roads, as well as in disturbed areas and…

Finding the Pink Star Caterpillar

When I imagine scientists discovering new animals, I picture them traveling to far-off jungles or remote mountaintops – not investigating local roadsides, utility cuts, or other edge…

Exploring Shrub Swamps

A yellowthroat warbler sang, “witchety, witchety, witch,” as I carefully made my way through the tangle of an alder swamp one afternoon not long ago. I looked about, hoping to…

Turtlehead Tests Bumblebees’ Mettle

Among the blooming perennials of late summer is one that guards its secrets closely. The lockbox blossoms of white turtlehead (Chelone glabra), a native plant in the plantain family, are an…

The Hidden History of Cyanobacteria

Perhaps you saw the flyers at your town office or a warning sign posted at your favorite swimming hole. The smell might have driven you home, but maybe you crept closer – unable to see…

Syrphid Flies Puzzle and Pollinate

Survey the insects orbiting a globe of milkweed blossoms or the delicate blooms of a chokeberry, and you might spy an apparent chimera. It looks a bit like a bee, perhaps a tad like a wasp,…

On the Edge, But Not on the Brink: Northeastern Bulrush

Twenty years ago, at this time of year, I found myself walking the margin of a marsh in east-central Vermont with Bob Popp, Vermont’s state botanist at that time. We had traveled to that…

Finding a Baltimore Checkerspot

A few summers ago, I was walking my dog in a pasture near my house when a butterfly landed on my bare leg. It was a medium-sized black butterfly with orange crescents along the margins of its…

What Makes Blueberries Blue?

Every summer I go blueberry picking and I notice the many colors of blueberries, from the luminous indigo of unpicked berries on a bush, which turn nearly black after handling, to the deep…

The Real Story of the Viceroy and the Monarch

On a warm summer morning, you’re sitting in your yard enjoying a slow moment, when a flash of color catches your eye. Bright orange and black wings dance through the air before alighting…

Treetop Gem: The Brilliant Blackburnian Warbler

One recent morning, trying to find the source of a warbler trill high in a white pine tree, I was rewarded with a brilliant flash of orange. It was my first sighting of a Blackburnian warbler,…

Fish Mouths: How Anatomy Suggests Ecology

The river roars in the heat of the summer. The water is clear and cool, and a respite from the high sun. An angler leans back, fly-fishing rod in hand, and casts it forward. The fly drops and…

Life in a Shell: Eastern Box Turtle

As a budding naturalist growing up in the concrete-heavy environs of Boston, I would regularly thumb through my family’s collection of nature books and daydream about the creatures…

The Dapper Sparrow of the Underbrush: Eastern Towhee

From forest edges and thickets on late spring mornings in the Northeast comes what sounds like an exhortation from across the pond: drink-your-tea! This is not a British parent’s plea,…