Nice portrait and I dont think the IQ has suffered much at all, looks quite good on my monitor...the only thought I may have is the breast feathers may be verging on being a bit bright, but that could very well be just my monitor. he contrasts nicely against the backdrop and liking very much his blue sheen on the wing. Personal tastes possibly but it could stand another slight round of sharpening I think
Looks like the bird has been busy working at something. Very nice pose and well exposed. Photo seems a bit bright to me so I might tone it down a bit. Love the bit of color. This looks quite similar to our magpie.