Field Notes

On a warmish day the first spring we were here, I was out walking the dogs and as I passed the birch my eye was caught by the reddish-orange forewing band of dozens of red admiral butterflies lined up along a seam running down the side of the trunk.

We gripped the ice-covered railings of the large pool and submerged ourselves in the warm, welcome embrace of the 110° mineral-rich water. The cold air over the hot pools was thick with fog. Before the warm water lulled us into a floating slumber, we jumped out into the ice-cold air, our bodies steaming, to freeze a little before returning to the comfort of the pool.

Smaller than a beaver, bigger than the common rat, these curious rodents are actually aquatic voles.

"Soil creep" is the gradual movement of the substrate downhill over time. It’s a slow process, but all the soil on a slope is moving. Importantly for trees, the soil moves more quickly on the surface than deeper down.

I am always surprised to see moss exposed in wintertime. Hiking on trails or backcountry roads, I encounter moss-covered rocks, or mossy ledges that crop out on the slope, like a bed where the quilt has been pulled back part way and you can see the sheets peeking out underneath.

A flutter of striking black, white, and grey outside the window caught my attention, and as I walked closer I saw a dozen large-bodied, sharp-beaked birds hopping around on the treed hillside. The Clark’s Nutcrackers are here again!

The moon lit up my yard that morning, when I went out with the dogs at 6:30. Recently fallen snow in the surrounding Sapphire foothills reflected the full moon’s light. I could see almost as well as during the day. The horses in the pasture watched us, as I’m sure they do each morning, though we usually can’t see them. The trees and shrubs glowed in the bluish predawn.

In my estimation, the Black-capped Chickadee deserves the ornithology award as the ultimate prepper for the long, cold Montana winter. These songbirds must survive on stored seeds until the spring when they can again enjoy a more robust omnivorous diet. Weighing about the same as a AAA battery, Black- capped Chickadees spend the shortening days canvassing for seeds to store in hundreds of tiny hiding places embedded in their ten-mile territory.

The change in my cat’s fur reminds me of a larger-scale transition undergone by the snowshoe hare. This hare sheds her brown summer coat at the end of autumn while growing new fur that is not only thicker, but another color altogether to help stay aligned with the change in seasons.

Imagine being on the shore of the Western Interior Seaway, 73 million years ago, near what is now Fort Peck Lake and the Charles M. Russell National Wildlife Refuge. (Yes, Montana once had beachfront property along a huge, warm, shallow inland sea!) You spy elasmosaurid Nakonanectes bradti as she comes up for air, showing teeth the size of a great white shark’s.