Bro… what are you doing?
These are Australian magpies, and it gets better.
The one hanging upside down is a juvenile, from the appearance of its spotted breast, which adults do not have.. At that age they can fly but are pretty clumsy. I’m guessing it managed to collide with the sheet or attempted to land on it and is now hanging on for dear life. Falling on its head just off the ground is unlikely to hurt it, but it won’t be pleasant regardless.
The one approaching it is an adult female, more than likely its mother, from the grey pattern on the back of her neck. That same area in males is solid white. She’s probably a little concerned.
“What did you do lil buddy????”
“I DONE FUCKED UP”
(Source: http://mrozna.tumblr.com/)