Ian:
Magnificent image of crane. I like the habitat in BG and FG, fluffy feathers with great details,pose with raised foot.
I would clean the dark spots just above the head and on the RHS.
You got some nice light here, and I am digging the layers in the feathers. I am thinking an even lower angle (I know it is not always possible) would have helped with the BG and I feel the neck and face could use another round of sharpening.