Purple
Martin Roosts -- What Will Become of Them?
By
Terry Anne Suchma
[Related
Article - Chicago Roosts]
If
only we could protect the enroute habitats known as roosts
for our martins!
If
only they could become some kind of preserved green space
for the birds.
Roosting
areas are very important to migratory bird species. Typically,
roosts and/or staging areas for large flocks of migratory
birds are short-lived, but for the time that migrating birds
spend there, they are life-sustaining habitat for them. Roosts
are abundant with insects where the birds can spend time
bulking up before they begin their many thousand-mile migration.
This is why they can be called pre-migratory roosting areas.
For many roosts, the areas chosen by the birds has been a traditional area
for many, many years, some for many decades, even centuries. In the center
city of Chicago, for example, Purple Martins have been staging at Montrose
Harbor for feeding and roosting nightly at Belmont Harbor for over fifty years.
Both of these areas are along the Lake Michigan shoreline, and, during the
2000 season, the roost moved to the Lincoln Park Zoo--all this well within
the hubbub of the large metropolitan City of Chicago.
While a
few million people go about their business every day in the
Windy City, Purple Martins and other migratory bird species
also go about their daily business and congregate along the
Lake Michigan Lakeshore where they have done so for years
on end and their forebirds have done before
Roosts
What Will
Become of Them?
Of the
millions of people in the Chicago area, most have no clue
to the natural phenomenon that cultivates and builds yearly
in the big city. Only known to a miniscule number of birding
and martin enthusiasts, the martins continue to do what they
have been doing for decades oblivious to most, if not all
the city residents. While the old timers tell us that the
numbers of martins cannot measure up to the old days where
there were, perhaps, a hundred thousand martins, there is
still a semblance of roosting numbers to excite the local
martin mavens.
Just like in Chicago, there are other venues across the Purple Martins' breeding
range where they congregate in large numbers, feeding and bulking up for the
long journey back to South America. And, the same thing! Many folks remain
oblivious to the martins just as they are oblivious to other wildlife interests.
We are seeing a rekindling of a back to nature spirit for many in the last
two decades. The birding interest, as a hobby, is today a $20,000.000 business
a year. Yes, that is 20 billion dollars! Considering all the birdhouses, birdfeeders,
optics, books, magazines and even ecotourism, birds bring a tidy profit to
a proliferation of bird related companies. But, this interest is generalized
and not specific to the Purple Martin interest.
And, while there is this insurgence of new interest in birds, butterflies and
nature, in general, there are still hordes of others that do not know the simplest
of bird species such as an American Robin. So, it does not take much to understand
why the clueless general public does not understand the idea of a roosting
area. Instead of looking at a roost as a wonderful, educational natural event,
most people see only the negativity in them. They are noisy; they are dirty.
So, let's
see what we can do to rid the area of this annoyance
A few years
ago, a well-known rubber company, in Birmingham, AL, with
the initials GY, had the pleasure, unbeknown to them, of
hosting a large flock of Purple Martins on the grounds of
the factory. Thinking that these birds that doo-dooed on
the employees' cars in the lots were more black birds, the
rubber company contracted a wildlife nuisance company to
rid the property of the so-called black birds. In doing so,
the wildlife nuisance company applied a product to the trees
on the property that caused birds' feet to stick fast and
tight to the substance. Death for these birds was horrible.
When it
found out that they were not killing only starlings (Duh!),
but also protected native species, including Purple Martins,
the US Fish & Wildlife Service law enforcement division
smacked them with a huge monetary fine and that educated
them fast on the laws that protect fish native bird species.
Ignorance is not bliss.
Unfortunately, while we revel in the large numbers of martins, their aerial
acrobatics and precise maneuverings into a large stand of deciduous trees for
the nights, there are others who become irate over the incessant nighttime
martin chatter, abundant droppings and possible health factors that could arise.
Beauty is in the eye of the beholder and these folks beheld no beauty in martins
as we do.
As many
martin wannabees know, you cannot make the martins go where
you want them to go. Though we call them the most semi-domesticated
wildbirds, we cannot coax them to change their instinctive
itinerary.
Even if
we were to protect the areas where the birds roost today,
would they return there next season and the season after
that? We have found that the birds in Chicago have had a
few different places to roost in the few recent years we
have been seriously observing them. For two seasons, they
returned to Belmont Harbor, but last year, they were nowhere
to be seen at Belmont. Like PM bloodhounds, we sniffed them
all the way down Lake Shore Drive to the Lincoln Park Zoo.
We thought
it appropriate that the birds should roost in the safe and
secure habitat at the Zoo, but one morning this spring, we
picked up our morning Tribune to read that the Lincoln Park
Zoo was planning a renovation of the Great Ape House.
You guessed
it!
That is
where the great numbers of Purple Martins roosted at the
Zoo. The Ape House is a subterranean exhibit with a beautiful
stand of mature trees above it. We don't know the details
yet.
Will they
dismantle the entire old Ape House and build a new one; will
they just renovate the old one?
We just
don't know. We are worried about the local martin roost here.
While we can tell you that the Zoo is the protector of endangered
animal species of the world, we are not sure how the Zoo's
people feel about Chicago's endangered Purple Martins. We
don't think that they will factor martins into their renovation
job. But, we will be checkin' with them and hopefully educate
them more. There are just not a lot of roosting sites near
the insect richness of the Lake Michigan in the big city
.
In Louisville,
TX, local authorities and folks there don't take much to
bird droppings at a roost located behind a local post office.
To complicate matter further, there are others who want to
build another human edifice there. Last August, equipment
was delivered and markers dotted the landscape. It looks
like something ominous is imminent. Our hope is that the
local authorities and the building concerns can be persuaded
to have the patience to let nature and martins take their
course. The Lewisville, TX Roost builds annually until mid-August,
then the birds mosey away, little by little, on their great
journey back to South America. It is an annual natural avian
event.
How can
we protect the roosts?
This is
a difficult question.
The Migratory
Bird Treaty Act (MBTA) only provides one paragraph detailing
the protection of birds. In this paragraph, birds, eggs nests,
nestlings and pieces/arts of any of the above are protected
by law. While the birds themselves enjoy protection of the
law, the trees in which they perch are not protected unless
it is during the breeding season and the birds are using
the tree for nesting purposes. We canot protect the trees
in which our birds perch while roosting.
Roosting
and staging bird behavior is a little observed ritual to
date, but if only people could take the time to enjoy nature
and appreciate what they have before they loose it because
when it's gone, it is gone! Many times forever.
 |