I have a 24x24 cage that looks like the King's cage model #134 for Rica. It had two uprights holding a perch for the play top. Note HAD.
A few days ago, I was sitting here at the pc and I heard a small clank, then 2 crashes with flapping and growling. I looked up and Rica had her head stuck in the upright. Yes, she is ok.
The small clank was Rica dropping the wingnut holding perch to the upright. The 2 crashes were the perch falling and the upright falling out and landing on Nikon's cage that is next to and up against Rica's. She was on the outside of the upright so fell with it and landed with her feet on Nikon's cage. The upright was at a 45º angle and she couldn't get free. I'm not sure if her head got stuck before or after it fell, but her head was through the upright and had slid up past the part that was sticking out (1) and was trapped in the small area at the top (2).
I was really lucky that I was right here, that Nikon's cage was close enough to catch her & the upright and that she fell out and not in, as she might have smacked her beak on the fallen perch. With the weight of the upright, she might have been really hurt instead of just ruffled.
The uprights are permanently off the cage now. I'll figure out a better play perch later.