We inhumans are going to kill all life on the planet, and sooner than anybody thinks. Unfortunately nature doesn't really have a mother or she'd be giving us all fatal halitosis.
There is something about electromagnetic radiation.
I watch the blackbirds and grackles hanging out on the power pole near the house all day long. Today in fact I saw a male cardinal blasting out his song for ten minutes up there without skipping a beat.
One thing I have noticed, however. I never, ever, ever see a bird of any kind perching on the high tension wires that power the substations near my neighborhood. I've observed this every day while driving near them, and I never actually see birds navigating the skies in their vicinity despite the fact that there are vultures and falcons and all manner of birds around there that routinely cruise, nest and perch at that altitude. I have yet to see a one.