I have been making watercolor versions of some birds I drew last year, as well as some new birds. I really like the vibrance of watercolor, and I am slowly getting better at using it. Once I have laid down teh color, I go back in with a technical pen and some india ink to do the outlines and details. I am not getting much better at scanning -- these are kind of washed out and not as bright and vivid as the real ones. But you get the idea.
A small ostrich, about 5 inches tall:
This one is actually about 16 inches wide, but it's hard to show that here:
This condor is about 12" tall: