This small 23-hectare area protects a spartina marsh located in the Pointe-au-Père sector of the city of Rimouski.

Despite its small size, it is frequented by over 120 species of birds, including snow geese, Barrow's goldeneye, least sandpiper and greater yellowlegs.

[12] The IBA covers an area of 47.71 km2, corresponding to the south shore of the St. Lawrence River between the Rocher-Blanc sector upstream and Pointe-au-Père downstream.

Also in spring, the reserve is visited by around 150 Barrow's goldeneyes (Bucephala islandica), 1,000 Least sandpipers and 250 Greater yellowlegs (Tringa melanoleuca).

[2] Also found here are red-winged blackbird (Agelaius phoeniceus), Wilson's snipe (Gallinago delicata) and swamp sparrow (Zonotrichia georgiana).

[2] Despite its small size, the reserve is home to a dozen mammal species, including the muskrat (Ondatra zibethicus), common shrew (Sorex cinereus), Meadow jumping mouse (Zapus hudsonius) and field vole (Microtus pennsylvanicus).

[2] The first efforts to protect the salt marsh date back to 1978, when a group of birdwatchers noticed the damage caused to the natural site by landfill and sand removal.

They all realized that the ecological integrity of the marsh, which until then had been fairly well preserved, was in danger of being compromised, which would undoubtedly have a negative impact on the presence of the birds that frequent it.

[16] On behalf of the Regroupement pour la conservation du marais de Pointe-au-Père (which foreshadowed the creation of the Club des Ornitholoques du Bas-Saint-Laurent), Mr. Fillion organized information meetings, photo exhibitions, and the publishing of reports in the local media to raise awareness of the marsh and its ecological importance among residents of the Rimouski region.

[2] The most important infrastructure dedicated to tourism in the reserve is a 500 m trail, and the only activities permitted are hiking, nature observation, and photography.

[2] A rest area and interpretation panels on marine biology were installed in the northern sector of the reserve in 2012 to "raise visitor awareness of the fragility of the environment and reduce disturbance of birds by kayakers and hikers".