"A drunk parrot writes the song."
Translation:Psittacus ebrius carmen scribit.
It's hard to believe, but Erasmus collected a refrain with «psittacus» in it, in his Adagia:
«Senex psittacus negligit ferulam».
The old parrot cares not for the staff.
I only found this refrain because of the Duolingo sentence,
so you'll always learn something from the strange sentences!