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Swan Season Is Upon Us
Wild swans will soon be in the news – native tundra swans,
that is. It’s usually during the second and third week of this
month that the tundra swans appear at their age-old favorite
stopover sites in this region to rest and feed during their long
arduous flight northward to their nesting grounds.
The greater-than-normal amount of snow this past winter,
preceded by deep frost, may result in plenty of flooded stubble
corn fields this month. These surely are among the tundra swans’
favorite gathering sites during spring migration. This awesome
ritual has been going on for centuries, taking the swans between
their primary wintering sites in the Chesapeake Bay region all
the way to the south shore of the Arctic Ocean, often with just
one major stopover.
It’s highly feasible that mixed in with the feeding and
resting tundra swans will be a small number of the re-introduced
trumpeter swans. Study your field guides and make special note
of the difference in the shape of the heads of the tundra versus
the trumpeter swan.
There is also the possibility of seeing a few mute swans. In
fact several pairs have lingered in open but sheltered bays along
the Lake Michigan shore during this past winter. To wake up in
the morning, look out the window and see a large, beautiful,
dignified white swan on your pond or a flooded field is quite a
memorable occasion. Gradually the word spreads and soon everyone
in the neighborhood has seen it, and before long people are
getting downright sentimental over the graceful creature.
The large knob at the base of the orange beak, plus the sheer
size of the bird, easily identifies it as a mute swan. In fact
there is no mistaking a flock of tundra swans by their
far-reaching whistled hoots. They surely are talkative. Mute
swans are quiet, hence their "mute" name.
Can you imagine mute swans becoming so common, like starlings
and house sparrows, that they no longer command one’s attention?
Worse still, can you visualize these large birds contributing
toward the eutrophication of dozens of ponds and small lakes,
driving thousands of native ducks, geese and other waterbirds out
of their nesting habitats, and in general becoming unwelcome
nuisances?
Consider the situation in many coastal regions of southern New
England where mute swans have become quite abundant. A number of
stories have been written describing not only the strong
polarization of people, many enjoying and favoring the mute
swans, but also a lot of people greatly opposed to their
presence. What makes for a very difficult problem is that so
many residents of that region recognize these astounding white
birds as symbols of beauty, grace, dignity and immortality.
However, Bruce Fellman, a Rhode Island naturalist summed up
the situation perfectly when he said, "What a majestic bird!
What grace and beauty! And what an awful pain in the neck!"
If you’ve ever tried walking down a lakeside road or shore
frequented by several hundred Canada geese, you are well aware of
the unbelievable quantity of manure to vainly attempt to avoid
stepping in.
It has been calculated that fifty swans resting on a little
pond every night, each bird having eaten as much as 14 pounds of
aquatic vegetation elsewhere during the day, can be a more severe
source of pollution to that body of water than a dozen
malfunctioning septic tanks.
People at Trustrum Pond, associated with the Audubon Society
in Rhode Island, had a terrible problem several years ago with a
resident flock of between 250 and 275 mute swans. Imagine the
amount of swan manure along that shore alone!
Comparing the introduced mute swan with the introduced
European starling and house sparrow admittedly is pretty
far-fetched. Nevertheless a potential problem with the giant
white birds looms in the not-too-distant future. Knowing how
serious a problem developed from the outwardly harmless
introduction of the small European birds to the U.S., perhaps the
wildlife experts are being wise and not overly cautious in their
stand to keep the mute swans in check.
Personally I struggle somewhat with the entire issue.
However, eastern U.S. wildlife biologists would be quick to
invite you to sites where the "royal" birds have gotten
out of control along with other dreadful invaders such as the
purple loosestrife plants.
On the other hand all I can say is that I’m mighty thankful
that small groups of "introduced" Bohemian immigrants,
among them my four great-grandparents who settled near Slovan and
Rostok in Kewaunee County, WI, my parent’s birthplaces, were not
denied entry into this great land in the late 1860’s!
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