On the island of La Gomera, people developed a secret "bird language" to send messages across giant mountains and deep valleys!

Imagine you want to tell your friend something, but they are standing on a mountaintop a mile away. You could shout until your throat hurts, or you could do what the people of La Gomera do: whistle!
On the island of La Gomera (part of the Canary Islands in Spain), there is a unique language called Silbo Gomero. It isn't a secret code of "yes" and "no" beeps. It is a real language that mimics the sounds of Spanish. By using their fingers, tongues, and hands, whistlers can turn words into high-pitched whistles that sound like birds chirping.
La Gomera is full of deep valleys and giant ravines. In the old days, walking to your neighbor's house might take hours because you'd have to climb down one mountain and up another. But sound travels fast! A loud whistle can carry for up to 5 kilometers (3 miles) across the valleys. Farmers used it to call their kids home, warn people of fires, or share the daily news.
When phones and paved roads arrived, people almost stopped whistling. But the islanders didn't want to lose their special "voice." Today, Silbo Gomero is a mandatory subject in schools on the island. Every child learns how to "speak" with their breath. UNESCO even named it a Masterpiece of the Oral and Intangible Heritage of Humanity!
Silbo Gomero is a whistled version of Spanish used on the island of La Gomera. It was invented to communicate across long distances in mountainous terrain. Today, it is a protected part of the island's culture and is still taught to every student in school.