All very interesting, but what I want to know is how they walk on a 120,000-volt power transmission line.
I think it’s because they aren’t grounded, so the current would has no reason to arc through them, or something like that.
They are OK.
It’s when the eagle swoops down to get them that his outside wing feathers touch two lines.
(Indians around Utah have been arrested for picking feathers off the dead, roasted birds under the power lines.)
Because they are only on one line, the same reason birds can land on them and not get fried. Let them arc across two of the lines, or touch a ground while still on the line and you will see instant roast squirrel or bird.