Very nicely done, Jeff, cool balancing act. You can spare some berries from the left to place the bird more in the rule of thirds. Too bad you leave so far ;)
I'm with Fabs in sacrificing some berries at left to de-center the subject. Perhaps add a bit of room above too. Otherwise very nice, great timing. Always a bonus not having to leave home for neat opportunities!
It's amazing how many berries those Waxwings can eat. The bird looks great, and you've frozen it at a perfect moment. I agree about moving it to the left of the frame.