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I don't know if this has any bearing on your subject, but here goes.
We only have Rubies here. The males can be very vicious and continue to challenge the dominant male. One afternoon, I witnessed the dominant male resting on "his" feeder. All of a sudden, I noticed a "laser shot" coming out of nowhere. Another male Ruby flew right into the perched male stabbing him. The force of the hit knocked the perched male off the feeder, he then flew back up to the feeder and sat there all fluffed out and teetering from side to side. He stayed there for hours. Towards evening he dropped to the ground. I picked him up and placed him on a bush, hoping that he would recover during the night.
The next morning, I found him lying on the ground. He must of died during the night.
One never knows, but Mother Nature can be unforgiving at times.