"I actually don't know," Cedric admitted, thinking hard on what Professor McGonagall had explained to them early on. "It's advanced magic to change yourself into an animal form at any time, and so complicated that only seven known practitioners existed in my world's last century. I don't have the spellbooks with me to learn from, so I suppose I'm never going to find out."

He twirled his wand and pointed it at a piece of rubble. "I can, however, do this:"

He murmured a Latin-esque phrase under his breath, and a piece of rubble at their feet transformed into the shade of a small bird. Cedric scooped it up and gave it a lift, watching as it flew around their heads. "This kind of transfiguration doesn't last long, but it's a useful distraction."