Birds ancestors were reptiles - dinosaurs to be exact.
Feathers are modified scales which they evolved over time to lose more weight, keep heat and use to attract opposite six. Their feet still have scales like lizards do. Earliest found bird species was http://en.wikipedia.org/wiki/Archaeopteryx, which lived 150–148 million years ago, and it's very reptile like. That time our ancestors were more similar to mouses than great apes.
There's long distance from reptiles becoming birds, but the connection is there and it makes sense. Reptiles DID grow feathers.
Thank you!
In Morrowind argonians could have horns. I want horns back!
This too. More variety in general would be good.
If I can muster the time, materials, and skill, I'll sketch or water-color a concept piece of a partially-feathered Argonian, put it on a suitable website, and post a link to it. No promises, but I'll try and get around to it.
I'm not trying to say they should be covered with feathers, that would be too much; I'm saying that small patches, and a Mohawk-like crest of appropriately colored feathers could be a very cool option.