>>4206460I'm guessing it was underexposed and he pulled up the shadows in lightroom.
In "sunny 16", 1/400 at 400 ISO calls for f/16... his 1/1600 is two stops shorter, so would call for f/8. He shot at f/6.3 so he'd be okay if his birb was in full sun! But the bird is probably in such shade that it would would call for like f/5.6 or f/4 at 1/400, so down into "fast prime" territory at 1/1600, which this lens obviousy can't do. So he could either shoot at 1600-3200, or pull it up later. I say he did good.