Produced in Spanish, this series contains 20 lessons on the intermediate level for teachers to use in foreign language science study. The toco toucans are medium-sized birds that are known for their beaks. Their beaks are very lightweight, and they have a honeycombed structure that is covered with a protective layer. These powerful beaks are up to 9 inches in the male, and slightly shorter in the female. These beautiful birds can be found throughout northern South America.