If you have the sort of perch that has a round disc to fix it to the inside of the cage and an oblong bar on the outside keep an eye on it. With the weight and movement of a parrot the oblong bar can gradually swivel round over time and then the perch falls down at some point when the parrot climbs on it. This happened to Monty last night and frightened him. I prefer the ones that have a circular disc for both the inside and outside but they aren't all like that. I have changed some of the oblong bars for circular discs from spare perches but they don't always fit the screw thread.
Somewhere in another universe, dear brother, you got saved.