Covering an area of 223 hectares, the refuge faunique Marguerite-D’Youville has been officially protected in perpetuity since 2010. The wildlife sanctuary’s enormous richness includes a wide variety of ecosystems, such as marshes, wetlands, fallow land and maple and oak stands. There are eight kilometres of trails much to the delight of outdoor enthusiasts, families, bird watchers and photographers. A fee is charged to access the wildlife sanctuary, which is reinvested in maintaining the site and also in upgrading facilities and services.

One of the attractions of this rich habitat is no doubt bird watching. The site is a major migratory stopover and over 240 bird species have been spotted. Many mammals roam freely, including a large number of white-tailed deer. Plant life is also plentiful and diverse and contributes to stunning scenery, which changes with every new ecosystem seen along the way.

Hikers can enhance their experience with a audioguide which offers information on the history of the hiker island as well as on the fauna and flora sheltering the territory.

Access to the Marguerite-D’Youville wildlife sanctuary, whether in summer or winter, is through the Pavillon de l’île. The site is open year round, from sunrise to sunset. Trails are available to hikers and snowshoers. However, going off trail or bringing dogs or other domestic animals is not allowed.