The original Spanish title of the movie was "La lengua de las mariposas" which translates into English as "The Tongue of the Butterflies" but which could also be translated as "The Language of Butterflies".
On one of their walks home (at 0:38:41), Moncho asks Andrés whether he knows what a tilonorrinco is and proceeds to talk about an Australian bird. In Spanish tilonorrinco is what in English is called the satin bowerbird (Ptilonorhynchus violaceus), a bowerbird endemic to eastern Australia.