The Immortal Budgie

Mrs Pargeter lived in 32B with an immortal budgie called Bob.
He was yellow and green and chirruped at odd intervals as though passing comment on the old woman’s behaviour. He would swing manically back and forth on a trapeze looking for the catcher in his dirty hexagonal prism mirror. The floor of his cage was littered with feathers, poo and Trill. He lived his lives behind thin, plastic coated wire bars.
Every now and then Bob died, the cage got a scrub in hot soapy water and a new Bob moved in.
Much, thought Mrs P., like Flat 32B.