If you look very close there is a tiny halo on both pictures indicating perhaps a bit of over sharpening, more noticeable on the female. Perhaps my eyes are failing, but look as hard as I can, I fail to find any CA (chromatic aberration Keith). Maybe if I blow them up to 500% I might see it, perhaps! but I have no intention of doing that. The small amount of over sharpening is easily put right, but for me, they are pleasing pictures of a not very often seen bird, with a nice BG, and a good natural environment, and taken in most likely not the perfect lighting. Well done Kaz