I sculpted my character in Zbrush and did the feathers using Fibermesh. I used a combination of basic feathers with a texture for the majority of the body, and then created much more dense feathers using fibermesh and grooming brushes for the more detailed tail feathers. For the coloring, I used vertex painting in Zbrush, and finally, I decimated to a lower poly count and rendered in Marmoset Toolbag.