When visiting the Geopark of Percé, the most remarkable fauna phenomenon you will see is the presence of the world’s largest accessible Gannet colony on Bonaventure Island, with over 121,000 gannets counted in 2008. In 1919 the Percé Rock and Bonaventure Island cliffs became a protected refuge for migratory birds. A constant and steady increase in population was noted from 1919 to 1933.
Click here to learn more about possible tours, hikes, and observations on Bonaventure Island (link to the site of the Percé Rock route, in french)
Must see also, this documentary about the Gannet colony of the island. Production: Sépaq / Language: French
Finally, another very beautiful documentary from the well-known TV show from France, Thalassa (TV5).