With spring, nature wakes up. Cuckoo primroses, poppies, cherry trees, pines, salamanders, ladybugs… How are these common flora and fauna species evolving with climate change? The Cistude nature association, in Aquitaine, offers everyone the opportunity to become an observer of the “climate sentinels”, these species which provide valuable information on the subject. Once the animal or plant has been chosen, you must follow a precise observation protocol and enter the data, being guided step by step. A very useful identification work for scientists and now offered throughout France through the Observatory of the seasons.