Overdid the salt in the background, and also the bird's feathers, the patterns of which I was trying too hard to define, especially on the back, or mantle. (See this page for a good diagram labeling all the feather groups.) I kept adding and adding, which is not good.
Wet-in-wet seems to yield a better result, but it's hard for me sometimes (many times?) to let things happen instead of trying to control them.
Tried to fix the background a bit ... but the main problem's the bird. So I'll juts set it aside and try again another time.
I think I need to move on to another subject for a day or two.