Where does “cocotilla” come from?

cocotilla (Spanish) comes from English cockatiel, from Dutch kaketielje, from Portuguese cacatua, from Malay kakatuwa, from Spanish cacatúa, from Malay kakaktua, from Malay tua, from Classical Malay tua — old.

cocotilla (Spanish): cockatiel (a small, rather atypical cockatoo with a distinctive pointed yellow crest)