Say, John, care to discuss more about the evolution of flight and feathers? I don't find the dinosaur-to-bird theory plausible; I prefer Feduccia & Mayr's view (stem reptiles-to-birds). Flight can only evolve top-down, not bottom-up: Darwin chose a really smart model in flying squirrels, so my speculation is that Archaeopteryx's predecessors were arboreal reptiles which evolved something like a gliding membrane. Try Svend Palm's opinion about this
http://home13.inet.tele.dk/palm/origbird.htm
As for feathers, maybe they're still useful as cannon fodder for creationists. I cannot find any info about how they might have evolved...
Does the protein that builds feathers have any affinition to reptile-scale proteins?