PARAKEETS THAT CAN SURVIVE
A MONTH WITHOUT WATER
Wild
parakeets live in the plains of Australia where it rarely
rains. Since they meet their need for water from the seeds
on which they feed, these birds can easily survive without
drinking water for a month in very dry seasons. Water is vital
to wild parakeets. For this reason, they can organise all
their lives according to climatic conditions. For example,
if water is insufficient, they stop breeding and begin to
search for new places with water. As soon as they find a sufficiently
big body of water, they begin to lay their eggs.
It is only by the inspiration
of Allah that parakeets organise their lives in compliance
with climatic conditions. Since the continuance of their species
is essential, they do not take any risks and stop breeding
at once. Our Lord, Who knows everything and is well aware
of His creatures, inspires them to behave that wisely. In
a verse, Allah says:
The seven heavens
and the earth and everyone in them glorify Him. There is nothing
which does not glorify Him with praise but you do not understand
their glorification. He is All-Forbearing, Ever-Forgiving.
(Surat al-Isra': 44)
THE STRUCTURE OF BIRDS'
FEATHERS
The
most important difference that distinguishes birds from other
creatures is surely their ability to fly. Birds can fly thanks
to their feathers, which in fact have a very special structure.
A bird's feather is a light
structure that has lift force and can easily regain its original
shape. If we examine a bird's feather under a microscope,
we see a marvellous design. In the middle part of the feather
is a hard central shaft having a vane of paired branches called
barbs on either side. These barbs, whose lengths and softness
vary, enable the bird to fly in the air.
As
we examine in further detail, we encounter even more interesting
structures. From each barb minute hairs called "barbules"
project. Barbules cannot be seen with the naked eye. On these
barbules are little hooks. The barbules are interlocked by
these hooks like a zipper.
The hooks are clamped together
like the two rows of a zipper. The barbules held together
by hooks are so close to each other that even smoke cannot
escape through them. If these hooks are somehow unlocked,
it is enough for the bird to shake itself or to put its feathers
in order with its beak, to make the feathers return to their
previous state.
In order to survive, birds should
always keep their feathers clean, neat and ready for use.
For the care of their feathers, they use the oil sacs that
are at the bottom of their tails. They take some oil with
their beak, and then clean and polish their feathers. In swimming
birds, this oil prevents water from reaching their skin when
they are in the water or in the rain.
Look at a bird's feather under
a microscope, and you will see the interlocked and hooked
structure of the feather.
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In addition, birds can prevent
loss of body heat by ruffling their feathers in cold weather.
In hot weather, on the other hand, they keep their body cool
by smoothing their feathers.
Each group of feathers in a
particular part of the body has particular functions. For
example the down feathers and the feathers that lie along
the wings and tail have different structures. Large tail feathers
are used for steering as well as for braking. As the wing
feathers are spread wide while flying, the surface area is
expanded and lift force increased. When the bird flaps its
wing downwards, these feathers come closer and prevent air
passing through. As the wings move up, the feathers open wide
and permit air to pass through them. In order to maintain
their ability to fly, birds moult their feathers at certain
times of the year. Large torn or worn out feathers that do
not function properly any more are renewed quickly.
This detailed structure exists
in the feathers of every bird. All of them have the features
that enable birds to fly. One who reflects on what is explained
here and uses his intellect will notice the design in birds
and will understand that this design is Allah's creation.
Even thinking about this attribute of birds alone is enough
to understand how mighty Allah is.
It is related in the Qur'an
that believers reflect on the creation of Allah:
The kingdom of
the heavens and earth belongs to Allah. Allah has power over
all things. In the creation of the heavens and the earth,
and the alternation of night and day, there are Signs for
people with intelligence: those who remember Allah, standing,
sitting and lying on their sides, and reflect on the creation
of the heavens and the earth (and say): 'Our Lord, You have
not created this for nothing. Glory be to You! So safeguard
us from the punishment of the Fire. (Surah Al 'Imran: 189-191)
BIRDS' TECHNIQUES OF SOARING
It
requires a great deal of energy to fly. However, birds are
small creatures and the energy they can store in their bodies
is limited. Birds obtain most of the energy they need by means
of applying special flying techniques. Gliding in the air
without flapping their wings is one of the techniques that
they use most. For example, vultures employ a special method
based on rising heat waves in order to glide at a convenient
altitude. Gliding from one heat wave to another, they can
fly over a vast area in a day.
Migratory
birds, too, make use of gliding techniques to save energy.
Storks, for example, use heat waves to fly during migration.
White storks of central Europe migrate to spend winter in
Africa and cover a distance of about 7,000 kilometres (4,350
miles). If they were to flap their wings all the way to their
destination, they would have to take four breaks during the
journey. Yet, white storks complete their journey in three
weeks by gliding between the heat waves for 6-7 hours a day
and thus saving most of their energy.
Since the sea warms up more
slowly than the land, there are no heat waves over the sea.
For this reason, migratory birds prefer to migrate over land
instead of making long sea journeys. You might have seen flocks
of storks that cover the sky at certain times of the year.
This is because storks, too, prefer to migrate over land.
You may not be aware of the fact that there isn't any warm
air over the sea but storks know it very well.
On
the other hand, albatrosses, seagulls and other sea birds
save energy by using air currents caused by high waves. These
sea birds that fly over the waves benefit from the lift force
of the air that turns upwards.
As seen in the examples given
here, all birds are cognisant of which techniques they will
use, where they will go and which route they will take. No
confusion arises for those that fly by using warm air currents
and those that fly by using air currents caused by the waves.
This is because Allah inspires every creature with the knowledge
it needs. In the Qur'an, Allah points out birds' movements
in the air and states:
Do you not see
that everyone in the heavens and earth glorifies Allah, as
do the birds with their outspread wings? Each one knows its
prayer and glorification. Allah knows what they do. (Surat
an-Nur: 41)
THE WATER BIRD THAT CUTS
THROUGH THE WATER LIKE SCISSORS
Those
who listen well to what is said and follow the best
of it, they are the ones whom Allah has guided, they
are the people of intelligence. (Surat az-Zumar: 18)
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Most birds cannot fly if their
wings come into contact with water because water causes their
feathers to stick to each other, which disables the bird moving
its wings. However, although aquatic birds dive into water
all day, nothing happens to them. You must be wondering how
and why, are you not?
There
is a special oil on the wings of water birds that prevents
feathers from sticking to each other when wet. This is how
these birds can dive into water without trouble. However,
the skimmer, a water bird species, lacks this oil. Therefore,
unlike other water birds, it cannot dive into water to hunt.
How, then, will it find its nourishment when it cannot enter
water?
Allah, the All-Merciful, All-Compassionate,
has created the lower beak of the bird longer than its upper
beak. The tip of the longer, lower beak is sensitive to touch.
In addition, the wings of this aquatic bird have been designed
so perfectly that it can glide just above the sea for a long
time without flapping its wings at all. While flying, it breaks
the surface of the water using its lower beak like scissors.
As soon as the sensitive tip of the beak touches its prey,
the bird immediately notices and catches it. This bird is
one of the evidences that Allah is the Originator of all creatures.
… He knows everything
in the land and sea.
No leaf falls without His knowing it.
There is no seed in the darkness of the earth,
and nothing moist or dry which is not in
a Clear Book.
(Surat al-An'am: 59)
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CUTTLEFISH LIKE JET ENGINES
Although
named a "fish", unlike other fish, the cuttlefish do not have
bones in their bodies. You may have wondered how these boneless
fish move along in water. Indeed, cuttlefish use quite an
unusual means of locomotion. The body of a cuttlefish, which
is composed of soft tissues, is covered with a thick layer
of skin. By means of muscles below this layer, a cuttlefish
collects water within its body and moves by squirting this
water out.
The system of the cuttlefish
based on squirting water is quite complicated. There is a
pocket-like opening on each side of the creature's head. The
water is drawn through these openings into a cylinder-like
cavity. Then the cuttlefish jets out this water from a narrow
pipe immediately under its head with great pressure. This
enables the animal to move swiftly in the opposite direction
and flee from predators because it can accelerate suddenly.
You may be wondering what would happen if the speed was not
high enough. In this case the cuttlefish sprays a dark coloured
liquid produced in the animal's body towards its enemy. This
spray of ink confuses the predator for a few seconds, which
is enough for the cuttlefish to flee. It flees from the place
and disappears in the spray of ink.
As all other living creatures,
this feature of the cuttlefish is the creation of Allah, the
Creator of everything. Allah informs us that there is no other
god besides Him :
Exalted be Allah,
the King, the Real. There is no god but Him, Lord of the Noble
Throne. (Surat az-Zumar: 10)
GREYLAG GEESE
Everything in the heavens
and the earth belongs to Allah. He knows what you are
engaged upon. On the Day when they are returned to Him,
He will inform them of what they did. Allah has knowledge
of all things.
(Surat an-Nur: 64) |
Greylag geese can fly at high
altitudes of about 8,000 metres (5 miles). This is in fact
quite a difficult task since many creatures cannot breathe
at such altitudes because of the deficiency in the amount
of oxygen available at high altitudes. This deficiency makes
respiration difficult. That is the reason why we can hardly
breathe when we climb up a high mountain. Flying at an altitude
that has a rarefied atmosphere, the bird needs to flap its
wings faster. In order to move its wings more, the bird will
expend more oxygen, which makes the situation even more difficult
for it. However, these birds do not experience any difficulty
even while they are flying at altitudes of thousands of meters.
That is thanks to the special creation of their lungs, which
make the most of the rare oxygen at high altitudes.
Functioning in a different way
than those of other creatures, these birds' lungs enable them
to obtain more energy from the rarefied atmosphere. And this
is one of the signs of Allah's perfect creation.
A MATCHLESS SECURITY SYSTEM
Some
creatures living near the surface of water are susceptible
to dangers both from above the water and from beneath them.
These creatures have an incredible means of security; they
are transparent. As you can see in the pictures, they are
unnoticed by their enemies. Likewise, crab, shrimp and fish
larvae are created almost completely transparent.
Obviously
these creatures could not possibly have considered the environment
they lived in and then adopted an appropriate colour. Besides,
how would these animals know that they need to be protected?
How could they be aware of the presence of predators and conclude
that they would not be noticed if they were transparent?
Allah, Who creates everything
perfectly, created these little defenceless creatures with
a perfect design. Allah watches over and protects all things.
Our compassionate Lord created a particular way of protection
for each being. And these creatures are protected from predators
thanks to their transparency. Allah creates all creatures
completely and perfectly. It is related in verses that Allah's
creation is matchless:
He Who created
the seven heavens in layers. You will not find any flaw in
the creation of the All-Merciful. Look again - do you see
any gaps? Then look again and again. Your sight will return
to you dazzled and exhausted! (Surat al-Mulk: 3-4)
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