Very pleasing image Chris! Excellent sharpness and detail. Awesome pose and composition too. Overall a bit bright and colours are washed out.
Would suggest some levels adjustment and also reconvert from RAW to keep the reds less bright.
Another beautiful shot Chris - soon we will have to start calling you "King of the Fairies"
I do agree with Ofer's comments about colours looking "washed out" - I think adding a bit of black "Selective Color" to the blacks may also help you out in this regard.
Very nice pose and I really like how you have isolated the wren on the great looking grass stock.
Good suggestions already given on adding a bit to the depth of colour. i had thought perhaps adding some black to the green colour may add to the stock.