Finally got the eyes rigged so that they now track with the head. When I was moving the head the eyes stayed in place. Disembodied floating eyes – spooky.
Note for myself
I added a bone to each eye and parented it to the head bone. Then I scaled and positioned the bone so that the end of the bone was at the center of the eye sphere. I then added constraints for location and rotation of the eye spheres to the eye bones.
Speaking of eyes, I had them checked and got dilated so I was in a bit of a haze today.