That's too bad. Its always frustrating when we put so much work (and money!) into an animal just to have them ignore what we do. My ferrets did that all the time.
Chickens seem to like perches that don't tip or tilt, it makes them feel safer, unlike parrots who like swings. Mine love thick...
Sounds like fun.
My chickens like playing on hay bales, natural stumps and branches, and they certainly love playing escape from their fence and get to the porch! My chicks also like exploring things that look like bugs and pecking at it, even if it is just a cereal box. They are so curious...