Showing posts with label birdsong. Show all posts
Showing posts with label birdsong. Show all posts

Thursday, August 3, 2017

Au Revoir, Summer!

It’s August - better known as the month I ruin by complaining the whole time that the summer is almost over. I love spring and early summer: the birds, the soft sunshine, the longer days, and the relaxed let’s-get-together-outside nature of friendships. But in August, the birds grow more quiet. The garden goes from abundant to weedy and overgrown. The sun seems too hot and the days too short. And the first day of the coming semester looms like a shadow over my carefully-cultivated summer-break calm and tranquility.

"Baby Eastern Bluebird" by Mark Theriot CC BY-NC-NC 2.0
But, as often happens when I take a long walk down our country road, nature had a lesson to teach me this morning. I was reminded that life comes in seasons and the fullness of life doesn’t diminish in fall and winter. It simply changes. Even though the birds may get quieter and begin to migrate away, there is still a wonderful bird-ness about August. Today I saw flocks of blackbirds and Canada geese feeding on the cut grain fields. I saw young, speckle-breasted bluebirds, trying their hand at hunting for insects, which are plentiful in the August heat. In fact, I saw lots of juvenile birds, and heard them, too; the beauty of the dawn chorus has been replaced by the amusing sounds of recent fledglings trying to mimic the adults. I heard a Northern Flicker cry out over and over again, in a time with the adults have mostly grown silent - it even attempted drumming a few times against the hollow wood of a snag. A fluffy little blue jay, in a rare moment of vulnerability for such a tough, canny species, cawed over and over again.

"Mother's Love" by Victoria Samuel USFWS CC BY 2.0
And then I looked through binoculars at a funny brown spot at the edge of the distant wood and made out a turkey, and then another turkey, and then lots of turkeys straggling in and out of the boundary of the wood: four hens and the twelve poults of their collective nursery. Later I saw a fawn, grown quite big but still with spots, looking at me curiously. Then it followed its mother across the road and disappeared into a cornfield. August is still alive - and magical.

And I relearned the rather trite lesson that everything has its season. We must move on to fall, and fall will be beautiful in its own way. Then there’s Christmas, and winter, and those first couple of snowfalls are indeed breathtaking. There may be fewer birds left at that point, but they’re easier to get to know. They spend their time nearer to us as we bring food to the feeder and crack the ice on the birdbath, and we can observe them more readily on the bare branches of trees. Then, just when we think we can’t take winter any longer, there are those marvelous days of March that hint at spring. Slowly, once again, the world comes back to life. And then I spend another August trying not to lament the end of summer.
"Sunset over Cornfield," by Johan Neven CC BY 2.0

I think we’re seasonal creatures living in a culture that tries to erase the seasons. We live a moderate-temperature life in our homes, no matter the weather outside. We buy strawberries and apples all year round. Christmas decorations show up in Walmart starting in September. It feels good to be outside on an August day, observing the specific pulse of life that happens only in August, and to bid summer au revoir rather than adieu.

Friday, June 17, 2016

In Praise of (Bird) Fathers



As Father’s Day approaches, obviously I can’t help but think about dads. There are all kinds of dads out there: wonderful dads, active dads, cold and distant dads, up close and personal dads, mean dads, deadbeat dads, disciplinarian dads, laidback dads - you name it!

There are also all kinds of bird dads. But, through our cultural lens, we often project our expectations of human dad behavior onto the bird world. For example, when describing birds in the process of nesting behaviors - building the nest, sitting on the nest, feeding the young’uns after they hatch - I always hear people use the pronoun “she.” In many of our minds, the human parent doing the most to manage the household and take care of babies is the mom. Sometimes our projections lead us to get quite heated about perceived fatherly neglect in the bird world. The other day I was reading in online forums about people’s experiences with killdeer nests in their yard, and one irate woman noted that the female killdeer sat on the nest 24 hours a day while her “no good husband” didn’t bother to stick around.

Fascinating, huh? Not only are we characterizing bird mating behaviors as marriage, but we’re also judging bird morality based on whether or not their actions conform to our human expectations of gender and marriage!

Once you start looking at bird behavior, you might be surprised to find that dads are integral to the nesting and caregiving processes of most bird species. They don’t just love ‘em and leave ‘em, as we may be tempted to think. Let’s take the example of the killdeer, assumed by this one woman to be a deadbeat dad. Killdeer pairs mate for life, they go around marking out potential nesting sites together, and they take pretty equal turns sitting on the nest. I know from experience with a killdeer nest in our garden that the male is much more aggressive about chasing potential threats away from the nest than the female. After the first nest hatches, the parents take the chicks away to a safer place and share the responsibility of caring for them until they can fly within about 30 days.

The northern cardinal dad is a devoted caregiver after the female incubates the eggs, feeding her and the chicks in the nest until they fledge. While the female sits on a second nest, the male continues to feed and look after the older, fledged young, while also feeding the female and guarding their territory. By the time the second set of eggs hatch, the older siblings are ready to live on their own, and the dad can turn his attention to the next brood of nestlings. It’s hard to find a male cardinal at the end of the breeding season who isn’t exhausted, with bare patches and bedraggled feathers, badly in need of a molt.

Songbird males can also serve as mentors to younger males. I’ve just recently learned how a chipping sparrow male learns to sing. He doesn’t learn from his dad. Instead, when chipping sparrows return to their breeding grounds a years after a young male hatches, he seeks out an older male in the territory he wishes to inhabit and learns that male’s song. An older male will not tolerate another adult male in his territory, but he allows this new young fellow to move in and learn his song, even knowing that that younger male may eventually seek to take over his territory.

Of course, a few birds are, in fact, deadbeat dads. Since they are so cute and beloved, you may be disappointed to know that the ruby-throated hummingbird male is one of the most neglectful. He flies around in all his ruby-throated glory and mates with one, two, three, or however many females he can find around his territory. After that, a female builds a nest, lays (typically) two eggs, and raises the chicks, all on her own. There is some probability that the male does allow her to feed in his territory without fighting her off, as he would another male, but that’s the extent of his care for her or the young. By the time the young hatch, the male has often left the territory. And then guess what happens: as soon as they’re old enough, her young will start fighting with the poor female over food sources in the territory. I’m sure the complaining woman mentioned above would have plenty to say about these ungrateful children!

So there are all kinds of bird dads, and they may or may not live up to our human standards (just like human dads). Just as it’s interesting to think about the social, cultural, economic, and other pressures that lead to certain kinds of human dad behaviors, it’s interesting to think about the territorial, food, climatic, and other kinds of factors that lead bird dads toward behaviors that will (hopefully) ensure the survival of their offspring and species. Happy Father’s Day to all dads, bird or human, with appreciation for all that you do!

Saturday, May 28, 2016

A Natural Mind, Part 1

The other day I went on a short birding trip with a friend who is new to birding (not new to appreciating birds, just new to learning and documenting what type they are). She said she felt she would never be able to recognize and remember all the different types. I remember feeling the same way when I began birding a few years ago. But birding has taught me a lot about the human mind, mainly that it instinctively wants to recognize and remember the natural world.

There are so many cues for recognizing birds. Color is the easiest one. We can all recognize a cardinal or a blue jay, and it’s impossible to forget an American goldfinch once you’ve seen the male in his yellow summertime glory. We also easily know general types and their general niche in the ecosystem: ducks are found near water, vultures soar high in the air. Those are good starting points, and we already know them, even without thinking much about them. At some point our minds noticed those features and filed them away in our innate filing system.

It only takes a little bit of observation time to start filling in some of the other features. One is song. That seems like the hardest to memorize, especially given that most of us think we are visual rather than aural learners. But our minds are working on those, too. I was telling my friend that many people memorize bird songs by turning them into English phrases, such as “Cheeseburger, cheeseburger, please!” for the Carolina wren. “Wait, I know that one,” she immediately said. She had heard that unmistakable melody, at surprisingly loud volume, all around her house, all year long. Her mind had already recognized and memorized it; she just didn’t have a label to put on it yet.

Another is a more subtle sense of where to find birds. Robins are on the ground during the nesting season, looking for earthworms. But many other birds are never seen on the ground. If you hear a Baltimore oriole - another unmistakable sound once you learn it - you should always look up in the very top of the trees; you will likely never see one on the ground. If you see a bird in the evening flying across your yard, swooping and diving and rising up again, over and over and over, chances are it’s a swallow of some kind.

Similarly, flight is a big indicator. Finches have a cute little up and down swoopy flight. Doves can move at an incredible speed straight across the sky, while a blue jay has a slow, clumsy flight. Shape and flight together are helpful indicators. I’m still learning to differentiate raptors, and one of the best ways to do so is to look at the general shape as they fly, which will tell you whether it’s a soaring hawk hunting for mammals (buteo, such as a red-tailed hawk), an agile-flying hawk hunting for other birds (accipter, such as a sharp-shinned hawk), or a flying-super-fast-or-hovering falcon hunting for just about anything (falcon, such as an American kestrel).

Once you get the big categories under your belt, more subtle features help further. Birders look for the number of wingbars a bird has or whether there are colored rings around their eyes. There are spots, stripes, and other marks. Bill type and shape are big helps as well: seed eaters have a certain bill shape that is very different from insect eaters, and we can all recognize the unique shape and function of the hummingbird’s nectar-extracting bill.

And, finally, our minds classify through comparison and contrast. As the categories sharpen, we instinctively begin to use those categories to differentiate birds. I thought I saw a phoebe while birding one morning last week. But the bird was a little bigger than a phoebe and had a white bar at the end of its tail, so I knew immediately it was an Eastern kingbird. When it made its buzzy sound, that was additional confirmation.

I read William Faulkner’s The Sound and the Fury in college, during a wonderful class on Faulkner taught by Dr. Charles Chappell at Hendrix College. I read it easily, despite the fact that it’s such a difficult book. It is narrated through stream of consciousness by a character who is cognitively disabled, and it makes little sense. Somehow I knew that I should simply file the information presented in each narrative away in my mind and not worry too much whether I understood it or not. Suddenly, in a series of moments of clarity toward the end, I had enough information to get what Benjy was trying to say. I often think of that when birding or working to identify trees or figuring out any other aspect of nature. All I have to do is let the information flow into the incredible classification system that is my brain, and over time my brain will sort it all out and give me the ID.

In my next blog on this topic, we’ll take a look at some of the indigenous peoples who live close to nature and use their innate classification system to memorize hundreds of species and aspects of the flora and fauna on which they depend for survival.

Thursday, March 10, 2016

Cute - or Deadly?

It’s a beautiful week in central Maryland, and I’m on spring break, which means I’ve been out a lot, looking at birds. As I walked along the Potomac River yesterday morning, there were Eastern bluebirds everywhere, one of my favorites. I love that flash of blue in the sunshine, that bit of chestnut brown on the breast, their big, round cartoon eyes, and their perky little song.

But these particular birds were not being cartoonish and perky; they were fighting. There were eight total, four males and four females. They seemed to be fighting over territory, with each pair trying to run off the other pairs. However, it may be that they were fighting over each other. It’s early in the mating season, and pairs may not yet be securely established. Plus, although most songbirds are generally monogamous, both male and female Eastern bluebirds always look to get a little action on the side. (This article provides a concise summary of bluebird mating habits with more such fascinating information.)

Whatever the reason, the fighting continued for the entire twenty minutes that I stood there watching. The birds chased, dove, flapped, and pecked - and they were so caught up in their actions that they were oblivious to my presence there, flying past me several times and letting me get pretty close to them. It struck me that they were wasting an enormous amount of precious energy on this process. Cold winters are hard on bluebirds, which generally stay put in our region for the year, and many of them die in the early spring because they are starving and weak and food resources have not yet picked back up. But here they were, willing to spend such long periods of time in the energy-sapping process of fighting.

This morning I had the thrilling opportunity to see two Northern flickers do their mating dance. (You can watch a quick video of this neat little dance here.) Another energy-intensive process, it went on for minutes and was followed by quite a bit of flying and chasing and chirping. Northern flickers are another year-round bird that can be exhausted and weak by this time of year, yet every year they summon up the energy for this elaborate mating process.

I often hear people talk about how “sweet” the sound of the birds is, how “happy” they sound when they sing or “cute” they look when they zip around our yards. I have used this language myself! When we hear birdsong, it makes us feel sweet and happy, and so we assume that those nice emotions must be shared by the pretty, energetic, brightly-colored birds around us.

But there is nothing sweet or happy about these springtime behaviors. These birds are in a fight for their lives and the right to claim the best territory, find the best mate(s), and raise the best brood. Those beautiful songs contain threats to competitors and lures to potential mates. Many of the males will lose out and be resigned to a life on the margins, trying to mate surreptitiously with an unattended female or move in on another male’s territory when he dies or is injured. The females will wear themselves out with raising brood after brood and helping to defend their territory against predators, other birds, and those marginal males. By the end of the nesting season, toward the middle to end of summer, all of the adults will be looking ragged and worn.

As I finished my walk this morning, I saw a male song sparrow, singing his heart out in an evergreen by a creek - the ideal spot for a song sparrow to claim as his territory. So tiny, singing his beautiful little melody - the words “cute” and “happy” definitely came to mind. Funny to think that, in his own mind, he was being “fierce” and “threatening” and asserting his “masculinity” - perhaps not too different from the young man who then drove by in his huge dually truck with double exhaust stacks.