Looks like your alignment to them changed between shots putting the upper bits of their wings closer to the plane of focus in the 2nd one? For what it's worth, I prefer the second shot since the wing-tips are more in focus and the background is more interesting (but not at all distracting
).
Either way, both are great
. I assume this is with your new Tamron 70-200mm? Would you mind sharing your impressions of this lens from the close-up standpoint? In particular, how are you finding the sharpness at or near f/2.8 at close focus distances?