I've noticed following:
there's one place near Ishad'Nha where you can face Banshee...
Just walk Shuregon Castle path and before Scantril's hut, there's
hill that looks just like graveyard...
At night you can see Banshee and skeletons!
I don't know other places near Ishad'Nha where you can meet skeletons and
banshee's! Well, if you don't count Shuregon Castle...
If any one has problems to realize that area, I add screencapture
from it... ( Sure I would have, and just can't find words to be more specific
)