We've had a few unique experiences here with hummers. We have a photo of one little male hanging upside down by his feet on the feeder perch, lunging at another hummer as it swept by. After he fought that way for a while, he let go and flew off.
We also had one get trapped in between the perch and the body of the feeder. My DH freed him, and off he flew, as well.
Last year we had a sparring/mating pair crash into the sliding door at the same time, killing both instantly. We have a bunch of crisscrossing orange tape on the door now, to avoid that situation again.
Several years ago we had a little rufous male show up around the first of November, and came many times per day till the first of February, when a terrible ice/sleet/wind storm froze him, I feel sure. OR, he was blown south to better weather. We don't normally get rufous here, so he was quite a surprise. I put up a light to heat the feeder, to keep it from freezing during the day, and changed it out with an unfrozen one every morning. The little guy would sometimes just sit under the light, warming himself, too.
That was one time I really wished I had a greenhouse, so I could protect him better.
Those are my hummer stories. For now.