Bats
The
days are getting shorter and the nights a little crisper.
Birds have begun their flight southward and tree tips
are starting to turn shades of res. Autumn arrives on
September 21, and with fall comes thoughts of crisp
apples, carved pumpkins and the famed creatures of the
night and Halloween lore -- bats.
Bats,
over the ages, have gotten a bad rap. there is a fog
of superstition, folklore and misinformation surrounding
these winged mammals. Further blackened by Halloween,
haunted houses and horror movies, the bat has become
a creature, erroneously, to fear rather than admire.
They are falsely accused of purposely entangling themselves
in ladies' hair, confused with the fictitious, bloodsucking
vampire and attacking people in their sleep.
When
you add it all up, bats are some of the most maligned
creatures around and although you may not want bats
in your belfry, we definitely need bats in our environment.
today, through natural history exhibits at local museums,
environmental education classes, image enhancing children's
books like Sellaluna and increased
understanding of their environmental importance, the
bat's status in the ecological scheme of things has
been greatly improved. Things are looking up for bats
and rightly so!
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The "BAT" Facts |
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Connecticut
bats are furred, warm-blooded mammals with
body lengths of 3-6" and wingspans ranging
from 8-16".
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Bats have
a fine, high-pitched squeak that is inaudible
to many human ears.
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Little brown
bats have the weight of a nickel, 1/4-1.8
oz.
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"blind
as a bat" is an old wives' take. bats
can see quite well.
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There are
nearly 1,000 species of bats worldwide, making
up 1/4 of all mammal species.
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Just 10 small
bats will consume over 1 million insects during
an average summer.
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To catch
insects, bats have developed a type of sonar
to locate even the tiniest of insects in the
dark of night.
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Bats are
not" swooping down" on humans at
night, as often believed. They are merely
going after the insects that people attract.
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Bat's speed
of flight can exceed 40 miles per hour.
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Bats are
most achieve 1 hour after sunset and 1 hour
before sunrise.
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Bats can
fly at 3 weeks of age and can live up to 20
years or more!
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Nature's
Most Effective Insecticide
Without these creatures of the night, it would be nearly
impossible for humans to go outside during the day.
Bats are Mother Nature's most effective insect control
mechanism. For example, a single little brown bat, one
of the most abundant and widespread bats in north Americas,
can eat 3,000 to 7,000 mosquitoes each night. That's
a pretty effective insecticide, especially when you
consider that it doesn't poison other creatures or make
holes in the ozone layer!
A
nocturnal mammal, the bat eats when the insects are
out, in contrast to birds, which eat during the day.
some bat species consume half their weight in a night,
sometimes as many as 600 or more gnat-sized insects
an hour.
Unlike
any other mammals, bats can fly. Their "hand"
and forearm bones are similar to those found in other
mammals but they are adapted to accommodate the bat's
continuous wing membranes. This thin, double layer of
skin encloses its somewhat elongated forearm; long,
tapered fingers; and hind limbs.
A
bat's fingers have great dexterity, so they can manipulate
the wings to form umbrella shapes that trap insects,
as well as hover in midair like hummingbirds. In all
species of bats, the clawlike thumbs of their extraordinary
hands remain free outside the wing. Bats use this fine
tool for clinging to the walls of caves, hanging from
tree branches and manipulating food and other objects.
Dispelling
the Myths
Contrary to the popular myth, bats have good eyesight
and rely on vision for long-distance orientation. For
short-distance navigation and catching food at night,
they use "echolocation." This sonar system
helps bats, like dolphins, locate targets and background
objects form the echoes of ultrasonic sounds. These
ultrasonic sounds are given slowly when a bat is foraging
and quicken as a bat pursues and captures an insect.
detection, pursuit and capture of an insect takes about
one second.
Bats
have no trouble distinguishing their prey for human
hair and more that likely, they swoop down around humans
when they pick up the number of insects that surround
them. Bats will avoid humans because their tracking
system tells them that they are too big to be a morsel
of food!
Worldwide,
there are nearly one thousand species of bats that come
in an amazing variety of appearances. Bats can be found
everywhere in the world except in the most extreme desert
an polar regions. The big-eyed, winsome expressions
of some bats often surprise oppose who would never have
thought that a bat could be attractive or even cute.
Conserving
Bats in Connecticut
Seven species of bats can be found in Connecticut. The
two most common bats in the state are the little brown
bat and the big brown bat. The remaining species are
less common and seldom seen. Two additional species
historically occurred in Connecticut -- the federally
endangered Indiana myotis and the eastern small-footed
bat. no confirmed sightings of these tow bats have been
recorded her in several decades. Typically bats are
very loyal to their birthplaces and hibernating sites
and are in temperate regions, cold winters force bats
to migrate.
Conservation
of bats is becoming a growing activity because bat populations
are declining worldwide at an alarming rate due to three
causes:
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human
misunderstanding and destruction out of fear
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increased
use of pesticides
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loss
of habitat
Increased
education and improved environmental practices will
improve the chances of survival for bats. Also, summer
housing for bats can help offset the loss of habitat.
making and putting up bat houses gives you the opportunity
to help Connecticut bats directly. Connecticut Audubon
Society and may other nature organizations can provide
you with information on how to build or where to buy
a bat house.
In
the news recently are reports of rabies found in bats.
However, the instance of the disease in bats in no higher
frequency than that seen in many other animals. According
to Jenny Dickson, CT D.E.P. Wildlife Biologist, the
statistics for those bats tested brought in and tested
for rabies has remained low for many years. "Of
the bats we receive for testing, only 3 to 5% have contracted
the disease and for the total population of bats in
Connecticut, that is a very low percent and a stable
statistic for several years. There has been no significant
change or increase in rabies."
As
a precaution, Ms. Dickinson recommends that pet owners
be sure that their animals have been regularly vaccinated,
especially cats who are more likely to come in contact
with bats. "If you find a baton the ground, which
is not where bats are typically found, it is best to
leave it alone or call your local Health Department
or Animal Control Officer," advises Ms. Dickson.
Learn
More About Bats
Look to the skies on 1 hour before sunrise and one hour
after sunset to see the fluttering display of bats rounding
up their insect prey. once you understand and appreciate
these remarkable creatures of the dark, bats can be
viewed as allies and an integral part of our natural
wold. For an educationally en;lightening and fun experience
to learn more about the fascinating world of bats, you
can visit the following places this fall:
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Connecticut
Audubon Birdcraft Museum:
"Creatures of the Night": a natural history
interactive exhibit opening in October (put link
here to program guide).
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Maritime
Aquarium at Norwalk:
"Masters of the Night: The True Story of Bats"
- Exhibit through January 4, 1998. call 203-852-0700
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