Extension News: January 2009 Archives

Recent fluctuating temperatures make venturing out onto the swamp a somewhat dicey activity. To be on the safe side, I decided instead to snowshoe around, rather than onto, the swamp and investigate an area I’d not explored before. It rises up behind the swamp to the north and had long been calling to me.

I headed down the path and out the gate, continuing into the woods. In no time the old stone wall that still marks the boundary between our stewardship and the next was standing before me. I found it easy enough to clamber over the wall, even with snowshoes on. The deer I was tracking had found it equally easy. These tracks were on the small side, so perhaps it was a young animal and it clearly came alone. I looked for evidence of browse but didn’t see any. Did nothing appeal to it?

Soon a lovely pine grove enveloped me. The trees were tall and the snow depth light. I saw pine cones and the little tracks of squirrels moving from tree to tree. A peaceful quiet hung there, with just a gentle murmur from the mild movement of the trees. I was reminded of a Robert Frost poem “The Sound of Trees,” in which he comments that the voice of trees is the one sound we “wish to bear” near our homes. The trees call to him, talking of going. I know they often call me to come and explore. They are most persuasive.

But today I was exploring tracks, and there in the grove were the unmistakable marks of a turkey. This was a treat. I love those ugly, gawky-looking birds. After moving into this house, I waited six years to see a turkey before looking out one afternoon a couple years ago and finding 42 in front of the house! They pecked along the driveway and into the front yard, while I ran from window to window, counting, taking pictures, and enjoying. Since then, we’ve had occasional sightings, and now, here I was following where one had gone not long before.

Up an incline it went (did it pant as I was doing?) and across a flowing stream. The rushing water confirmed my fears for walking on the swamp. Better to be here on a knoll, following a turkey’s path. Thanks to the snowshoes, crossing on the large snow-covered stones in the stream bed was no trouble at all. Soon I had moved into another grove of big pine trees, their edged bark dark against the snow.

It’s easy to understand why prehistoric peoples considered groves to be sacred places. Their height blocks out everything outside them. Every sound uttered within takes on a deeper meaning. Surely here spirits can communicate with us mere mortals. Is that chickadee really calling out to another of its flock or is it speaking to me? And what is its message? If I concentrate, can I decipher it?

Eventually, I leave the grove and turkey trail and wander down to the edge of the swamp. How often I’ve looked up at this area while pushing through the wind on the swamp’s snow-covered surface. Here, the trees break the wind and I can easily explore the stumps the beavers have left behind. There are few hardwoods here, just a couple of stumps of young trees a few inches in diameter. The cuts are old and gray. The beavers have moved to other areas around the swamp. From here, I can see all the heron nests from last summer. The older ones, big and solid looking, sit firmly on the dead pines. They look like they will be there forever. The newest ones appear to barely cling to the branches. If they aren’t refurbished in spring, they will be gone by July.

As I continue my journey, I cross the stream again farther up. I’ve lost the turkey tracks, but have found some even more interesting to me: two small paw prints, one slightly ahead of the other; and ahead of both, two larger prints side by side. Later at home, a check in a book on animal tracks confirms my suspicions. Earlier in the day, a rabbit had hopped through the upper edge of the pine forest. If you’ve ever watched a rabbit jump, you know the rear feet come forward ahead of the front feet. Thus its direction was clear­up the hill, into the sunnier area of young hardwood saplings and brush.

I would have enjoyed following it a while longer, but, unfortunately, my time grew short. I turned and headed back towards the house. Sharing time with the wild beings that live in this land is a privilege. I had seen the tracks of three fellow creatures and heard the calls of a few more, but my senses are imperfect. How many other creatures had been watching me, while I, all unawares, blundered around in the snow? Quite a few, I hope.

By Susan M. Poirier, Master Gardener

What a wonderful way to begin a new year-three fluffy male bluebirds fluttering about outside our back picture window. If it weren’t for the glass, I could reach right out and grab them, they are so close. They flew in to our bird feeder near the window with a flock of assorted winter birds: finches, phoebes, titmice and chickadees.

I’ve seen bluebirds as late as Christmas in the past, but this is my first midwinter sighting. They are such a spectacular sight; their colors seem even more vivid against the drab trees and the bright white snow. “The blue-bird carries the sky on his back,” Thoreau wrote in his Journal of September 7, 1851.

Peterson’s Field Guide for Eastern Birds shows the northern edge of the bluebirds’ year-round range along the Connecticut and Rhode Island coasts and out to the Cape, so it isn’t as if they forgot to fly to South America. And these bluebirds looked perky and happy.

After great success last summer with a “full house”­both bluebirds and swallows successfully fledging their broods in our garden bird boxes and the wrens successful in their gourd house nearby, we added another bluebird box in the garden this fall.

Since bluebirds are insect eaters, I’m delighted to have them at work picking off the garden pests. Just days after we finally got the extra box up in November before deep frosts, five bluebirds stopped by to check out the boxes, and one actually sat on the roof of the new box. I have heard that they can be suspicious of a new box, so I was happy they’d at least perched on it. We carefully cleaned the three old boxes in the fall, removing the debris of sticks typical of house wrens and the softer nesting materials­pine needles, grasses and feathers of the bluebird. I read that it is important to clean out the boxes to remove parasites.

We learned just how important two years ago, when after brushing out the debris, my husband exclaimed, “What’s that? It just moved!” He was looking at a disgusting black blob about the size of a small bean attached to the floor of the box. Arrrgggh! We were looking at live blowfly larvae, a nasty parasite of bluebirds. Blowflies are often the reason a second bluebird brood is unsuccessful. The larvae (maggots) in the boxes crawl out at night to drink the blood of the little nestlings­the ugly side of nature!

Despite such predators, we’ve had bluebirds nesting in the garden boxes for about 20 years. They love our open field surrounded by shrubs and woods. Our gardens, with lots of fence posts, old sunflower stalks and some young Christmas trees, attract them because they can land and spot insects from these perches three or four feet from the ground. There’s lots of food for them in our garden, a good reason for not using pesticides.

They typically arrive at the bird boxes in March, when the ground is still snow-covered. But in spite of the snow, they get busy building their nests, beating out competing birds such as swallows and house wrens. This is the reason we have several boxes.

Last summer the swallows did arrive later and began swooping all about the boxes. I ran to the garden to shoo them away, but they swooped and dive-bombed me. Happily they figured out that they were to nest in the empty box and didn’t chase out the nesting bluebirds. The two species lived in peace and harmony.

Fledging is exciting to watch and I luckily caught fledging day for each of the three species. I’ve seen the bluebirds fledge before, although I wasn’t sure of the reason for all the twittering and fluttering about the box. Once they learn to fly, bluebirds leave the box and disappear into the surrounding shrubs.

I was working in the garden the day the swallows fledged, and it was truly a spectacular show. The parents chased the flock of young swallows about for what seemed to me an exhausting length of time, swooping in great arcs and circles with NO stopping. Of course I assumed that it would take several days for them to perfect their soaring techniques, and was waiting for it to happen the next day, but that was it. They were gone.

The wrens’ gourd house is attached to a tree branch so the fledging wrens flew about the tree branches making lots of noise as they perfected their flying skills. They, too, were gone in a day. So now I’m waiting for another winter bluebird sighting. One theory is that over-wintering bluebirds have the advantage of the best bluebird boxes in the spring. The first brood generally seems to be the more successful. So perhaps my bluebirds are so happy with their life here that they didn’t want to risk losing their homes by flying south for the winter. I guess they hide in the shrubs for the winter, surviving on berries and maybe frozen insects.

By Anne Krantz, Master Gardener & Community Tree Steward

Remember those soft little snowflakes falling from the sky, attaching to your eyelashes, mittens, and tongue during those snowy days when you were growing up? Oh, how my friends and I loved to get up and out when the announcement came, SNOW DAY. NO SCHOOL!

Remember sitting outside by yourself and listening to the snow fall, how quiet and secure it made you feel?

Growing up in the fifties and sixties, I never really understood why snowflakes were so wonderful or why the water they’re made from is so powerful. How could the substance in those delicate little flakes from my childhood float on the top of a pond, move mountains, and kill living plant tissue?

I never really made the connection between liquid water and ice until I was studying to teach Advanced Placement biology. I had a wonderful instructor whose job it was to bring all of us pre-1963 high school science teachers up to date.

This class brought me one of those “aha” moments when things suddenly come together and begin to make sense. My moment of enlightenment came when our instructor explained water and all its properties.

We began with the structure of the simple H2O molecule everyone knows by its chemical formula: two hydrogen atoms (H) and one oxygen atom (O). The way in which the hydrogen and oxygen atoms bond and by which the molecules attach to each other causes liquid water molecules to attach and break apart constantly, giving water its familiar fluid appearance. But what about ice? How does water become ice and float?

The unique bonding properties of the water molecule also account for ice. As liquid water begins to lose its heat and freeze, the molecules attach to one another in such a way as to keep each molecule at arm’s length from its neighbors, creating the rigid lattice structure we know as ice. This ice lattice creates space between the molecules, making ice less dense than water and causing it to expand and float.

Also due to this shape, when liquid water flows between rocks and down into cracks in rocks and freezes, the ice lattice expands to nine percent more than the water’s liquid shape and exerts a tremendous force on the surrounding rock. This expansion causes fractures along the rocks’ natural weak points. Adding gravity explains why the Old Man in the Mountain was doomed to fall in spite of the valiant attempts to hold it in place.

Now as fall fades and the woods turn white with snow, what caused those maple leaves to shrivel and fall and your geraniums to turn to brown mush and begin to rot, but doesn’t damage evergreen shrubs and trees? It seems water and freezing temperatures again are the culprits. Leaves on deciduous trees die as part of a plan.

As sunlight and temperatures decrease, photosynthesis slows and the tree begins to use more energy than its leaves produce. These are the clues for the tree to reduce its energy budget and remove all those things causing a negative draw on its energy stores. Trees drop their leaves and take a long winter’s nap.

But many of our cold-tolerant evergreen trees and shrubs have adapted to freezing temperatures by moving water out of their cells to spaces between the cells, allowing the cells to survive by lowering their freezing points. When the temperature rises, melting occurs, water moves back into the cells, and the plant resumes its growth activities, though there may be some cell damage. But not all trees survive, as the drying winds so common here in winter can kill a tree by drying out the water between its cells.

That explains how trees may (or may not) survive, but what about geraniums? Geraniums and other summer-flowering annuals, due to their genetics, don't transport water out of their cells, so ice forms in their cells and kills the plants.

So, as daylight decreases and gardens are put to sleep, I look out my window at the frozen pond, the surrounding trees and shrubs, and the deflated, brown vegetation of the flower garden, and I think: I now understand why ice floats, snowflakes form, leaves die, and The Old Man in the Mountain fell. It’s all because of the simple structure of ice-crystal lattices created as liquid water freezes.

And, as winter advances, snowflakes fly, and the woods look dead, I know that even in winter, plant cells in my trees and shrubs are performing tiny miracles, preparing for spring.

By Suzy Martin, Master Gardener,Community Tree Steward