It's here:
Evidence Of Design In Bird Feathers And Avian Respiration
Have fun.
(I'll be interested to see your reaction... Maybe you can help point out where the author actually provides evidence of design in birds, because I can't find it.)
OK, first off the journal seems like it might not be quite up to
Nature standards, but...
First off within the first paragraph it gives a nod to
irreducible complexity, which is almost always incorrect.
How on earth did they invoke
thermodynamics in this discussion??? Wow.
The use of a paragraph outlining the need to remind the readers that life arising without intelligent design is, itself, an unproven assumption would seem to suggest the authors don't really understand what a "null hypothesis" is. That indeed, one always starts with the null and tests against it.
The discussion of feathers is interesting. Because not all feathers are flight surfaces, especially in birds. We have birds completely incapable of flight which have feathers. And recently dinosaurs have been found with feather impressions indicating that indeed they may have had feathers but no flight.
To make the leap that feathers had to be somehow present as made for flight or some specialized purpose other than simply variant body covering is where the irreducible complexity argument falls flat again.
The article jumps very quickly to "aerodynamic loading" in Section 2.4, but flight by feathered birds may very well have arisen long after feathers themselves were present in some form or another.
I must admit I'm not a biologist, but this is why Intelligent Design is so much more of a PHILOSOPHICAL endeavor. Yes, countless systems in living beings are quite complex and yes
if we as humans were going to design a plant or a bird or a whale we'd build it up as a DESIGN, but that necessity does not hold for nature.
These structures are hardly impossible to form and once formed as long as they are not maladaptive prior to passing on the genes will remain. AND if adaptive will probably lead to those genes being preferentially passed along.
This is also the glory of TIME in the life sciences. We have millions of years (billions) to work with to develop systems. It's not perfectly random, but it is governed by an overarching passive filter.
This is kind of fascinating. I need to learn more about Turing Reaction Diffusion. But it also seems like the authors may be working backwards from the structures in feathers that they take as being necessary for flight back to first principles in the DNA of the animal. As if those FUNCTIONS dictated the need for the DNA sequence instead of the DNA sequence giving rise to features which just happened to have a function later on.
Need to take a break here for a bit and read on... Thanks for the link!