Chrysalis of Cabbage White Butterfly. Green and knobby with black dots, the pupa tapers to a point at each end. It emerges the last time the caterpillar splits its skin.

Magic or Just Biology: Metamorphosis

As I am discovering more about the insects on Owl Acres, I’ve learned that insects follow one of two basic lifecycles—either incomplete metamorphosis or complete metamorphosis. The approach that’s easiest to understand is incomplete metamorphosis. This scheme has the egg hatching into a nymph—a miniature version of a cicada or grasshopper. The nymphs grow and […]

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White dusty coating of Powdery Mildew on the leaves of Wild Bergamot in the prairie garden. The purple flower head of the host plant is visible at top of frame.

Alien Marvel: Powdery Mildew

When I was growing up in the sixties, my science teacher had us learn the classification system for plants and animals. That is, we learned that there were kingdom, phylum, class, order, family, genus, and species. And we learned that there were two kingdoms—plants and animals. A lot of science and classifying has gone on […]

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You might think this an ordinary weed, climbing over the sidewalk, but it’s not. It’s knotweed.

Prostrate Knotweed

Last fall we had some cement work done on the sidewalk leading to the deck. The ground had settled significantly in the 20 years since the house was built, and the cement sidewalk settled with it. This project was to correct that. In the process of completing the work, the ground next to the sidewalk […]

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A female cardinal rests in Karen’s hand, victim of a lethal encounter with a window.

Lethal Hazard: Window Glass

Have you ever watched a bird crash into your window? It’s heartbreaking to see it happen. There’s that thunk against the glass, and then the bird falls to the ground. Maybe it gets up again and flies away, and maybe it doesn’t. 60% of the birds that survive the collision die from it sooner or […]

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A little grey songbird perches atop a bare twig. Eastern Wood Pewee waits to sally forth on its next mission to snag dinner-on-the-wing.

Flycatcher: Eastern Wood Pewee

On May 14, 2025, a little olive-gray bird with a big voice joined the chorus on Owl Acres. It’s a voice that’s relatively easy to identify. It features a clear, bright, sliding whistle. It slides down and then up sounding like “pee’a’wee.” He’ll sing to us all summer while he guards his territory, and courts […]

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