I really do clean the Budgie areas at least once a day, if not many times. But last evening my husband put the birds to bed on his own so I didn't see what Rio had been up to. This morning when I set up their cages by the window & their perch at the other end of the room - it broke! As I cleaned the area around the perches I came up with lots of wood chips.
Here is the culprit at work.

He has taken the wood away around the screws.
So when I went for my walk this morning I harvested some tree branches along with the grass I gather; willow - from a fallen branch - & some Mulberry - as shown on top of their cages. When they've finished playing with the leaves I'll work it into a new gym. [It got a good scrub & they don't spray around here]

Their cages this morning with the Mulberry branch & grasses & the old perch on the dresser.
I think the work destructive should be added to the Species names of all parrots.