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Most
bats are devoted mates and can barely stand separation from one
another. Of course with almost one thousand species existing worldwide,
as with human preferences, bats' mating behavior run the gamut of
possibilities. When bats migrate, they climb to more than 10,000
feet to cruise. Of the 155 species of mammals in Belize, 85 of them
are bats, an amazing 55%.
Bats
are the only true flying mammal and are unquestioned champions of
aeronautics. Bats are our own distant relative. The bones of a bat's
wings are essentially the same design as those in human arms and
hands, having a thumb and four fingers. The brains of flying foxes
have more in common with primates than they do with rodents. Bats
can hibernate at will. If there is a food shortage due to weather
changes, bats can shut down their metabolism and sleep until better
times. When a hibernating bat is disturbed, its body temperature
rises in preparation for escape and thereby costs from 10 to 30
days of stored fat reserve.
Where
bats hang isn't random. Each has his own berth on the wall and they
roost near a cave entrance or on a particularly warm pocket of the
ceiling. They are extremely loyal to their caves of birth and hibernation.
To them it is nothing less than "Home Sweet Home." Bats employ a
sonar system which is 1,000 times more sophisticated than any of
man's similar inventions.
Birds
have beaks and feathers and bats have teeth and a living membrane
stretched between their "fingers". Unlike feathers, this membrane
can mend if damaged. Unlike feathers, however, if serious damage
occurs to the membrane it will cripple the bat since it cannot be
shed and replaced.
A
bird's wing is fixed. A bat can scoop things up with its wing, cradle
a new baby in the bottom of its wing, wrap a wing around itself
like a shawl, and slingshot food into its mouth. Some bats live
to be more than thirty years old, almost half the span of humans.
Babies
are born hairless and for survival need to maintain a body temperature
of 100 degrees Fahrenheit. When disturbed they move to colder places
and often die of exposure. Sometimes the mothers are so panicked
by disturbance they drop the babies who die on the spot. When a
mother returns from a hunt, she calls to her baby and her baby calls
back. Their unique voices and smells, even in a noisy nursery of
thousands or millions of calling bats, enable mothers and babies
to find each other.
An
infant bat is 1/3 of its mother's weight at birth. It is the same
as a human giving birth to a forty pound baby. Mexican Free-tailed
Bats are born in June and weaned in five weeks when they can fly
with their mothers.
The
loss of bats could seriously threaten the survival of tropical rain
forests since they are the major seed dispersers of many tropical
plants and trees. Sixty percent of bats do not survive infancy;
a female has only one infant a year so population recovery is quite
slow. In Central and and South America, fruit and insectivorous
bats are often the victims of indiscriminate blasting of caves to
control Vampire Bat populations.
Destruction
of bat colonies will cause entire cave ecosystems to be eliminated.
One campaign in Brazil destroyed more than 8,000 cave colonies.
How far does a bat have to decline before it is declared endangered?
In the southwest U.S. the Free-tailed Bat, which is the most abundant
in most areas, has declined by 99.99%. bats cluster in large colonies.
A million bats can
be wiped out in less than five minutes because of easy access and
vulnerability.
Bats are sensative to enviromental changes. It would be nice if people would stop only being compassionate to the animals they relate to because
they have big brown eyes or beautiful fur. Bats are not nice looking animals to many people. Just like a bat, a weed
is just a plant whose virtues haven't been discovered. Some of the
ugliest animals on earth are among the most ecologically and economically
valuable. Or as in bush medicine, "the bitter the better". Cute
and cuddly has nothing to do with intrinsic value. Lets love and protect our Bats.
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