The Wings of an Eagle...

Evolutionists have some interesting stories and narratives, mythological narratives about the way their mommy Nature "selects" things and so on. I noted an old one that was once, and among some still is seriously promoted as the "Tree Down Theory."

It looks a little like this: "Once upon a time, a group of avian ancestors were jumping around in trees. They jumped around for various reasons. But some of them fell down and died. The rest, they just kept on jumping. Thanks to the fact that some of them fell down and died the ones that survived began to change. Because of random mutations in their genetic code the information that made them began to be written differently. The daddy random mutation wrote a change and so mommy Nature selected his good lil' changes to the code. The random mutator is such a good writer, do you not know? He'll write you a lil' story about X-men too, after all.

So what happend was the avian ancestors began to grow one lil' wing, then another lil' wing. Then, the feathers, one lil' feather, then another lil' feather....also, the male and the female both grew the right reproductive organs at the right time, right on time. It was very romantic, random mutation just kept writing it down, just so.

Then, mommy Nature kept selecting the best parts to make for some diversity! So they grew the avian lung which breathes both ways. Plus the sphincter muscles so, no lil' leaks, now that is a good selection! In the end, once upon a lot of time they just happened to have two lil' wings and enough lil' feathers that they flew, flew on away!"

That's basically the way geeks do some story telling. One maverick biologist notes the actual biology of some things:

"On the whole, however, even the most tentative schemes outlining a sequence of events are seldom convincing. Take, for example, the problem of the origin of birds. The flight feather of a bird is one of the most beautiful and well known of all biological adaptations. Each feather consists of a central shaft carrying a series of barbs which are positioned at right angles to the shaft to form the vane. The barbs which make up the vane are held together by rows of barbules. From the anterior barbules, hooks project downward and these interlock with ridges on the posterior barbules. Altogether, in the flight feather of a large bird, about a million barbules cooperate to bind the barbs into an impervious vane.

The feather is a magnificent adaptation for flight. Flight feathers are remarkably light and strong and anyone who has played with one will know how easily a ruffled feather can be repaired merely by drawing it between the fingers. In addition to its lightness and strength the feather has also permitted the exploitation of a number of sophisticated aerodynamic principles in the design of the bird’s wing.

One problem common to all aerofoils is turbulence, which reduces lift and causes stalling. Turbulence can be greatly cut down by the provision of slots in the aerofoil which let through part of the air stream and tend to smooth down the flow. Aeroengineers have used this principle by placing a small subsiduary aerofoil in front of the main wing, creating the so-called Handley Page slot. The use of feathers in the design of an aerofoil lends itself admirably to the provisions of slots, and most birds’ wings exploit this technique. The use of feathers also provides the bird with an aerofoil of variable geometry so that it has the ability to vary the shape and aerodynamic properties of its wing at take-off, landing, and for various different sorts of flight — flapping, gliding, soaring. In many birds, the positioning of the feathers is maintained by an intricate system of tendons which allow the feathers to twist in such a way that when the wing is raised they open like the vanes of a blind, greatly reducing resistence, but close completely on the downstroke, thus greatly improving the efficiency of flight. One need only watch the darting-backwards-and- forwards flight of the humming bird to grasp something of the excellent aerodynamic properties of the feathered aerofoil.

It is almost universally accepted by evolutionary biologists that birds evolved from reptiles, and that the feather evolved from a reptile’s scale."
(Evolution: A Theory In Crisis, Michael Denton :202-203)

Yes, what evolves rather quickly are evolutionists hypotheses. These are their lil' stories about things. They seem to be capable of making up a story about anything. It's creative, yet not science.

The new one:
"Once upon a time, a group of lizards who would be avian ancestors jumped, jumped up in the air! Then, they started growing one lil' feather, then another lil' feather...."