Neither have I, for sharing.

By their size, I would say it's probably mom (right) and this years fledgling (left). It seems to me that a momma hummer would chase their own offspring, but not with the same ferocity or intent they would pursue a unrelated rival.

You may be right, mblan13. I don't normally think of hummingbirds nesting and raising young around here, but I suppose it is possible. All I know is that I was thrilled!

I have a cable stretched between two 4x4 s in my back yard and on occasion will see two sitting on it at the same time however briefly.