Possible Clues:

• Old actress with grand final performance
• Gloria Gaynor's first and last performance
• A dying performance
• A bird's last lay?
• Final career performance
• Last appearance before retirement
• Final work or performance
• Small, pale lad beginning to generate final piece of work
• That's the very last thing 1 down would do, by the sound of it
• That's one last thing you'd expect to hear from the bird