While we are all used to seeing ruby-throated humming birds defend feeders, we witnessed an all-time low in their behavior this week. Two females (no sign of even the tiniest red feathers on the throats to suggest immature males) started to deliberately collide in the air. After several minutes of this, one got the other one down on the deck and started pummeling it. Kay decided enough was enough and rushed out telling them to quit that! I could just imagine the ruler in her hand, but their knuckles were too small and they were off too fast. They did return to aerial combat almost immediately. I wonder what would have happened if we had not intervened. Ralph and Kay Brinkhurst Lebanon, Wilson Co.