"The drunk parrot writes the song."
Translation:Psittacus ebrius carmen scribit.
I only put the adjective there to test how the course would handle it -- it is of course not the most obvious way to order this thought, but it is also true that the course will need to develop a way to deal with this sort of variation.
I don't like that "has to be" in your answer. That's just wrong as a matter of fact, as is easily proved by a glance at any page of Latin.