Life is also made up of the unseen.
Matter is the vehicle on this plane of existence for the manifestation of the soul and the soul on a higher plane of existence is the vehicle for the manifestation of the spirirt...these three are a trinity synthesized by life which pervades them all... ~HPB
To sink in the physical.... or swim in the meta-physical...that is the question...
Both swim in the same Ocean...The shizophrenic sinks while the Mystic swims...
"You cannot fly like an eagle with the wings of a wren."
-- William Henry Hudson
D.
Nature Laboratory:
"You cannot fly like an eagle with the wings of a wren."
-- William Henry Hudson
Mankind has yearned to fly for untold ages. Children have yearned to fly at all young
ages. Staring up at a rooftop (or down from one), entertaining schemes involving an
umbrella or a pillowcase-parachute, thinking "If I just flap hard enough…" — all are part
of the mental calisthenics that help children learn about the physical limitations of the
human body. For those that chose to learn the hard way, gravity tends to win, and broken
bones are sure to follow.
Humans aren't built to fly — we build airplanes to help us defy gravity's siren song. But
there are some creatures earning frequent flier miles by the millions, some that wing
through the skies with ease; birds, of course, but also some insects and mammals, not to
mention ancient reptiles like pterosaur dinosaurs.
Perhaps the most obvious adaptation to flight evident in birds (and lacking in humans) are
wings, which help propel birds and fellow fliers into and through the air. Feathers are
another characteristic of birds that permit flight. Contour feathers along the body create a
streamlined shape to make them aerodynamic, while flight feathers form the wings and
tails essential to flight. Downy feathers also help birds retain heat to stay warm.
But there are other adaptations, less obvious to the naked eye, that gift birds with a reign
of the skies. One of the biggest obstacles in flight is staying aloft. If you ever see an
osprey catch a salmon, or a raven fly off with someone's discarded food, notice how
awkward they are when weighed down. To stay light, birds have hollow bones filled
with air sacs, and instead of bulky teeth and jaws, they have horny beaks. While light,
they are still exceptionally strong to withstand the stress of flight. Even feathers are
weightless. With regard to body size, the average bird's feathers contribute only 6-7% of
their total weight.
Along the same lines, many internal organs are reduced in size, such as the female's
singular, small ovary which drastically increases in size during the breeding season.
Birds lack a bladder, instead excreting uric acid in solid crystals rather than in a heavier
water-bound urea. Birds also have shortened tails, and specialized bones and muscles to
orchestrate flying itself.
Despite all of their adaptations, flight can be tiresome, so some birds have devised ways
to make flying easier still. Take for instance pelicans, which fly in the classic V
formation. In flight, the V creates an air stream within which trailing birds can glide
longer, allowing them to conserve wing beats, and thus energy, during long flights.
When the leaders get tired, they trade off with other birds in their wake.
Not all birds fly, though. Even though their ancestors once flew, birds like ostriches,
emus, rheas, penguins and kiwis are presently vertically landlocked. In exchange, they
became more able runners, like the rhea, or swimmers, like the penguin. Some of the
characteristics necessary for flight disappeared with disuse. For example, penguins have
adapted a squat, fusiform (torpedo shaped) body for swimming underwater. Their flight
feathers have been reduced to help insulate their body and to repel water, their wing
bones have flattened, and the wing overall has been modified into a flipper.
Flight is important for birds in helping them escape from predators and to find mates,
food, nest sites and new territories. But when a bird is blown by a storm to an island
devoid of natural predators, yet full of foods and habitats within which they can thrive,
environmental pressures often make flight less important. In the case of penguins, their
choice of food — fish — made it more advantageous for them to swim than fly. Flippers
help penguins navigate underwater like a seal, and their heavier bones make it easier to
dive in pursuit of dinner.
Hands On
:Flight muscles attach to a bird's skeleton along the breast and consist of two
types. Dark muscles (dark meat) are the strong muscles loaded with blood vesselsBachelor’s in Science, and is at present a practicing freelance science writer.
needed to sustain flight for extended periods. Light muscles (light meat) are used for
quick bursts of flight. Game birds such as turkeys that don't migrate or fly regularly have
light colored muscles. Soaring birds, like eagles, have darker muscles. Birds that rely on
both quick bursts and extended periods of flight, such as pigeons, have both types of
muscles.
To explore the mechanics of a bird's flight muscles, examine a skinless chicken carcass
from the grocer. Based on your understanding of the different muscle types, what can the
chicken carcass' muscles tell you about how a chicken flies? Do chickens soar?
Migrate? Make quick bursts of flight?
Compare photos of different birds to see what you can glean from their appearance.
What characteristics do eagles and condors have in common? Songbirds and game birds?
Ostriches and penguins?
Comparing penguins and songbirds, what characteristics make one a more able flier, the
other a more able swimmer? Compare the body shapes of a penguin to a torpedo, and an
eagle to an airplane? What lessons have mankind learned from nature? What can these
similarities and differences tell you about how birds have adapted to different
environments?
Matthew Bettelheim graduated from the University of California, San Diego, with a
Hi Mikal...,
I kind of tossed this one into the tank and let it simmer for a while...
I have my own business and it's not uncommon to hear customers express their desire for my "personal attention"...That always makes me feel special...warm and fuzzy and while I have so many customers and I'm so tied up with my "personal efforts" I can't always extend that "personal touch" to each and every one individually...when they want... I always make sure that their needs and concerns are foremost in my mind...people understandably still like to feel like they are "the only customer I have" and when I do get to them...I try to make them feel as good about me as I do about them...for them giving me... their business, their trust and their support...
Noblise` Oblige`, {With Honor, Obligation]
D.
Drifter...your just a sweetie...the nature of my post here is one that should matter to us all...not just me because it is a sister I am gifted to love in life. Deeply grateful you let it simmer...dear...thank you
Peace Mikal
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