There are four species of birch in Europe, and the one growing here is the downy birch. There are many proven medicinal properties of its sap and bark, such as natural detox properties and its ability to remedy rheumatism, fatigue and allergies!
In the reserve, the birches are monitored as part of the "Phénoclim" programme set up by CREA to measure the impact of climate change on the life cycle of plants.