Presumably, Reardon’s inspiration for the work was the famous Monty Python “Dead Parrot” sketch, though that featured a definitely deceased "Norwegian Blue" (but you cannot deny this cockatoo also has lovely plumage). A version of the sketch was filmed in a pet shop on London’s Caledonian Road, so some might wonder why the parrot is not found in that more northerly location. Perhaps it was pining for the Docklands?
Monument for a Dead Parrot, by artist Jon Reardon.
Devonport House Hotel in Greenwich, London.
✅ That's correct. Quite bizarre.
Is it related to the Monty Python sketch?
Source
So that's a possibility.