Natural Connections

The Wild Wonders Summer Camp kids chattered away as they dug into their lunches, oblivious to the yellow-bellied sapsucker who skirted up and down the bark of the tree just a few feet away, in search of their own lunch. I watched as the sapsucker took flight, their speckled wings flapping quickly through the trees, until they landed on the bark of another tree and disappeared! It took me a second to realize that they had entered into a small hole hidden in the bark of the tree. Had I not watched them enter, I never would have noticed the hole high up in the bark, or learned of the nest inside. But I could not focus on the yellow-bellied sapsucker nest for long. My campers had finished lunch and were getting restless.

From a distance, the forests of July look like a lush tapestry of green. But when you step into the loosely woven strands and take a closer look, the leaves are etched with feeding trails, dissected by holes of all shapes and sizes, and covered with the debris of life. It's a principle of ecology, of course, that every Being is food for someone else. Feeding styles vary. Some invertebrates are "leaf folders," while others are "leaf rollers" or "leaf tiers." All of these insects and spiders use silk that contracts as it dries to shape leaves into shelters.    I set out to find examples of all of the leaf architects. 

I barely caught the flash of brown out of the corner of my eye, but Kevin had a clear view. He followed the flight path of the bird until they landed on the far side of a small channel lined with arching sedges. Despite the bird's pinstriped camouflage blending seamlessly with the tall grass, and having never before seen one in the wild, his identification came instantly: American bittern!  Bitterns hunt alone, mostly at dawn and dusk, and are said to be easier to hear than to see. Their deep booming, gulping calls travel far across marshes, but the male "thunder-pumpers" are vocal only during their spring mating season, and so it's not even that easy to hear them. Add to that bitterns' decline in parallel with the decline of their wetland homes, and we'd resigned ourselves to admiring their mystery instead of enjoying an encounter.

My heart raced as I reached my hand into the bag. What if I broke them? What if I let them escape? Then my fingers found a familiar grip, and before I knew it, I was holding this bird just like I had the warbler. Now that I was the bander and not just the releaser, the vibration of their heart felt different. Their safety was in my hands. My own heart slowed, and I took a steadying breath.  Maneuvering the veery so that I could grip their right leg in my left thumb and forefinger, I slipped the open band over their leg. Now they were ready to contribute to science!  "This bird will be forever connected to you," Jim reminded me after we'd sent the veery flying back into the brush. My heart fluttered happily

The sound of boots crunching on sandy sediments and excited chatter filled the air. The first day of our Wisconsin Master Naturalist training had begun, and twenty people from all walks of life were eager to learn about the ecology of the Northwoods. Over the next five days, these participants would be exploring sites all over Bayfield County, and learning from experts across multiple natural resource fields. Our goal was not to instantly train experts in Northwoods ecology, but rather to spark curiosity and connection with the natural world. Whether coming from a natural resource background themselves, or simply wanting to learn more about nature, our participants were eager to dive into the knowledge of our experts. And we were jumping right into the geology of the Northwoods at our first field trip location–an esker left by the glaciers around 11,000 years ago.

Dappled light, mosquitoes, and the roar of a chainsaw filled the humid air on a morning in early June. Guided by skilled hands, the blade sliced through pale wood. Lacey green leaves trembled against the blue sky before tipping toward a gap in the canopy, brushing past the twigs of neighbors, and easing quietly onto the earth exactly where the feller intended. If a black ash tree falls in the forest, must it land with a crash?  Deep in the woods east of Lake Namakagon, I'd gathered a small team of volunteers on an urgent mission.

While staying in Boulder Junction, Wis. to take a Wilderness First Responder course last week, I made time for a bike ride on the Heart of Vilas County Bike Trail. This wonderfully curvy, scenic, paved trail is a favorite of mine. At this junction between spring and summer, I delighted in the profusion of flowers. Lois Nestel, the Museum's first naturalist and director, might not have joined me on a bike ride, but I know I would have loved to walk attentively through the woods with her. This week, I'd like to share her description of the residents of woods and fields as summer begins to bloom. Slow down a minute with me, we'll smell the roses, and I think you'll find it rewarding.

I sat on the tan, dusty ground of the quarry in north central Iowa, fingers grasping at the shell that lay halfway buried in the chalky clay and limestone. Wiggling it back and forth, I gently pulled it up from the ground that it had been resting in for millions of years. The ridged shell was almost perfectly intact, painting me a detailed picture of what the animal looked like. I had found a brachiopod fossil, a marine invertebrate who used to live in the warm, shallow sea of the Devonian Period, roughly 380 million years ago. As I sat examining my find, I couldn't help but think about how special it is to find something so ancient, to hold the remnants of their life in my hand, and glimpse what life on Earth was like millions of years ago.

In just the last week or two, new life has exploded in the Northwoods. To my brain, it feels like a burst of fireworks. Instead of embers sparkling in the darkness, there's been a surge of colorful blossoms, an eruption of vibrant baby leaves, a cacophony of birdsong, and a buzz of movement everywhere I look. 

The shiny resin on balsam poplar buds turns to airborne molecules during spring leaf-out. Those molecules contain a myriad of chemicals that are useful to the tree -- and beneficial to us! Thriving in the far north -- farther than any other broadleaf tree in North America -- balsam poplar is poised to make drastic changes to the tundra as summer temperatures warm. Read more about this amazing tree in this week's Natural Connections, or listen to the podcast. 

426 - A Prairie-Dweller Moves North A lump of gray fur in the middle of the trail pulled us up short. The small mammal was about the size of a gray squirrel, but with cute, round ears tucked below their silhouette. I'd never seen a Franklin's ground squirrel before! On various websites I read that these are a species of tallgrass prairies, although they've declined as the prairies have declined. In the southeastern part of their range the squirrels are barely hanging on in grassy roadsides and railroad right-of-ways—the same places where a few native plants have escaped the plow. Several sources suggested that they belong only in the southern and western portions of Minnesota. So what was this little prairie dweller doing in Northeastern Minnesota?

My companion gasped in the middle of a sentence as a pine warbler darted over my head and landed on rough spruce bark a few feet way. Then he swooped to a rock wall and paused mid-hop to belt out a trill. We watched his stout beak open and his white wing bars vibrate with the effort. Pine warblers are aptly named, as they are rarely spotted anywhere but in pine trees.

First, we squinted, then we peered through binoculars, and finally I zoomed in with my camera to make sense of the dark shapes. The ducks had a funny conehead and a gracefully swooped patch of gray on their side. The pale ring around their dark beak was the most distinctive character. I'm not good at waterfowl, so I wracked my brain for a likely ID…were they ring-billed ducks? That would be logical. But no, a quick peek through the Merlin app's helpful photos confirmed that these were ring-necked ducks. Huh?