Month: March 2021

Cloak of winter lifted

When the sun yawned on the eastern horizon on the first day of spring only one cloud stood in its wake-up way. That cloud, narrow and jagged, painted a temporary design on the reddish sphere. And then it went wherever clouds go.

The sun cleared the clutter and claimed the morning. And the day. It had already inhaled the snow over the previous weeks. Now it was intent on warming the nesting feelings in arriving birds. It was also awakening the flutter in our spring’s earliest butterfly.

By afternoon, mourning cloaks were flopping and flitting about in the yard. I had to check a butterfly guide to confirm what I was looking at. It all rushed back to me—the mourning cloak’s overall dark appearance making the cream-colored border on its wings stand out. The top of its wings are a deep brown, with a band of bluish dots on black tracing the golden rim.

Our best look at a mourning cloak is normally when it alights on something and folds its wings. The underside of those wings is dark charcoal, but again the creamy rim distinctly marks the butterfly’s 3-inch wingspan. Note that the wing edges may appear ragged from the wear of its long life in butterfly terms.

We admire monarch butterflies for their thousands of miles migration flight to winter in Mexico. But on the other end of the spectrum, we might want to give some love to the non-migrating mourning cloak. Yes, it overwinters in butterfly form, not as an egg or larvae. It stays out of the snow by tucking into a hole or crevice in a tree or unheated outbuilding.

This mild hibernation, called diapause, actually takes a fluttering pause on some unusually mild winter days. Say it’s a sunny afternoon well into the 40˚s in late winter. The mourning cloak may emerge for a short flight. For the most part, however, the butterfly stays sheltered, and it’s this winter adult form that makes the mourning cloak one of the longest living butterflies, even if that life is only 10 months.

We, too, like those rare thawing days in winter. But what finally brings us out are the spring days of sunshine, when sap leaks from the maple tree trunk and branches. That’s where I saw the mourning cloaks taking aim, and it all makes sense, for our first butterfly is a sap feeder, seeking out anything sugary.

I watched this marvel of the butterfly world. In the vernal equinox sun, the flight of the mourning cloak warmed me, knowing our winged creatures were reappearing in the reawakening countryside.

Ready for bluebirds

As March melts toward what we hope is the spring of April, anticipation must be building for gardeners. Though my parents had big and bountiful gardens on the farm, for some reason I don’t have the itch or niche for raising vegetables. I will let others enjoy the garden and will barter for their produce when it comes of age.

My March days are full of anticipation of what’s coming to the fields, not the gardens, and I’m not talking about alfalfa, clover and corn. I’m dreaming of bluebirds on sunny, warm spring days. I’m working on their lodging so it’s ready when their flight arrives.

A few weeks ago, as March dawned like a house cat rather than a lion, I got at the task immediately, while the field was still covered with several inches of crusted snow. But considering the speed with which that snow was leaving, and the promising longe-range forecast, I knew bluebirds could arrive early. I usually note their return the first week in April. But March has been noted in my journal before, and could be again this spring.

I keep adding nesting boxes—there are now five—but the one the bluebirds prefer was the first I ever built. It was rather crude, made of weathered shed boards from an uncle’s farm. One spring I replaced it with something bigger and better (I thought) and moved the original a couple of hundred yards farther north on the edge of the field, where it meets the town road ditch.

When the bluebirds returned, they promptly found and claimed the box that I moved—their old home—proving new and improved isn’t always better. The tree swallows took over my new project, as they have at other boxes intended for bluebirds. So be it; the two species get along fine in the same neighborhood, which also has bobolinks nesting near the ground in the hayfield.

Several years ago I improved ventilation in all boxes in hopes of helping the birds and their chicks survive prolonged days of hot sun; one July I found dead bluebird chicks in the nest after a brutal stretch of heat. Last year, I repaired a rotted corner of the tree swallows’ box with a piece of aluminum cut from a Leinenkugel’s beer can. The swallows didn’t mind the advertising. This spring, the boxes pretty much needed only cleaning, though one roof required refastening.

During the inspection, I was pulling old grass and cottony seed balls of goldenrod from one box when something jumped from the nest mess. A short-tailed shrew hit the snow and scampered for long grass. A shrew shack! I was wearing gloves, but nevertheless found a stick to finish the clean-out.

After a walk through the woods, sinking several inches into the granulated, melting snow, I started back through the field toward the road. I passed the readied bird boxes, wondering when bluebirds and swallows will return to this field, along with bobolinks and meadowlarks. The day was warm enough, with a blue sky, that it felt it could be any hour. But I knew it was several weeks away. Spring will come; it always does. The bluebirds will tell me when.

Learning of larks

Horned larks are messing with my eyes and challenging my photography efforts. And now, these masked birds with horns are giving me a devil of a time wondering where they spend their winters.

A birding friend of mine used to let me know when horned larks started showing up along the roads. He was a birdwatcher and a bartender—I don’t know if the two have a correlation—and he was excited about this first sign of spring in the bird seasons of northern Wisconsin. I assumed he meant the horned larks were migrating here. He has passed, so my opportunity to ask has also passed.

It always seems too early to see the horned larks. And they are tough to see, fading into the brown grasses and dirty snowbanks along roads as early as the last days of February, and certainly by the first week in March. A horned lark is creamy-hued with streaks of tan and a yellow face. It has a black patch on its throat and a line of black above its bill, extending under its eyes and down its cheeks, giving the appearance of a mask or handlebar mustache.

And it has those tiny horns atop its head. The horns are, of course, feathers, but with the “mask” give the bird a menacing look. That is, if you can get close enough for a look. When I’m walking next to fields this time of year I normally don’t see the bird until it takes flight from a snowbank or patch of grass, sometimes only 25 feet away.

I hold my camera ready, but inevitably the camouflaged lark is taking off before I see it. Normally there’s a loose, spread-out flock of several birds. Every day I vow to see the horned larks before they fly. I don’t. The photo above? Well, I got sort of lucky but at long range, from one field to another across a town road.

Now, with more study of horned larks, I learn that some of the birds may overwinter here if there’s scant snow and they can find natural seeds. However, they prefer bare ground, so I’m sure most of the larks are following bare ground northward. When bird books show horned larks are year-round residents in Wisconsin, the part of the state being referred to is probably well to the south.

So, “our” horned larks in March are either migrating here or through here from areas to the south, or if some spent the winter here they are now more visible as they peck at seeds along baring road shoulders. Either way, horned larks lifting off from ditches in late winter is one of our earliest signs of spring. They will be nesting by April in northern Wisconsin and well into Canada.

March produces the most sightings of horned larks in Wisconsin. I’ll keep my camera at ready and my eyes focused for a yellow face on the roadsides of March.

Stirrings of spring

So you think spring is stirring in your bones. Whatever fever you’re feeling, it’s probably not as strong as the migration tug in birds to the south of us these March days.

Spring is stirring in not only the bones of birds, but also in their brains—yes, bird brains—urging them to point their beaks northward and get on with what’s arousing their feathers, tingling their wings. It’s the stirring of migration and nesting, the need to nuture a family. It’s the awakening once again to get on with the survival of the species.

A migration study has found that birds’ urge to fly north in the spring has such an urgency that they make their spring return journey to our yards, fields and forests two to six times faster than their southward flight in fall. Scientists are now tracking entire migration routes, speeds and stopover locations of individual songbirds, using tiny geolocators, the first tracking devices small enough and light enough for songbirds to carry.

Weighing a fraction of an ounce, geolocators don’t slow the flight, say scientists. One female purple martin was tracked averaging 358 miles a day while winging northward more than 4,500 miles in only 13 days. That’s nearly four times faster than scientists previously thought. (Come to think about it, translating wings to tires, the 358 miles a day would also be pretty good for traveling cross-country by car or RV.)

Not only are we finding that birds migrate at a faster flight speed in spring than previously thought, we are also finding that the fall migration is more leisurely, with long layovers. Could it be that after all the hustle and bustle of nesting is over the birds simply slow down, take a breather and enjoy themselves?

But come spring, they feel the overwhelming urge to travel and stake a claim in the northland (as was the scarlet tanager in the above photo from a past spring). They’re feeling the urge to build a nest and raise young. They’re feeling it right now, a thousand or more miles away. Your bluebird, your robin, your oriole, your hummingbird—yes, all of them and more—are booking a flight to travel swift and light.