One of the fierce battles between the Flicker and the Starlings. The Starling got into the hole and fought from there. The flicker was pecking him on the head non-stop, then they went in for a few minutes. We were expecting to see a dead starling fly off the tree, but no, they both survived. I think this is is really cute, with that Karate lock. For the less observant, you can see the invader's bill on the upper part of the hole. There was really very little light, so even getting this one was tough, especially with such a small area of coverage of the 600/4.
1d4, 600/4,
f/5.6, 1/640, ISO 2000