This Last image looks pretty good but the rocks in the foreground look more like cow patties...
I like the setting, very nice. What if you 'round' the rocks more, e.g. by putting a transform shader between rocks and child input and set to world. Or add one or two bigger boulders in front.
Very calm scene with natural colors.
For my taste there is to much ground visible, I would add more grass.
Maybe one bigger boulder in front of view?
But overall, a very good meadow!
STORMLROD
Very nice! One small suggestion (if you are planning to do another version): Mix a handful of bare trees in the woods to break them up a bit . . . most woods and woodlots have a good percentage of old or dead trees.
Foreground is lovely. Like you can walk right into it.
Looking great, and nice colors. I like the birds as well :) . I'd agree with making the grass denser up front, with maybe some clumping to let the ground show through if you want that. I really like the left midground especially, with the flowers mixed in with the rocks. The trees look nice too, which ones are those?