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Although biodiversity issues are gaining visibility, their appropriation by forest owners is sometimes conflictual. The implementation of Natura 2000 network is an emblematic example. The very low take-up of Natura 2000 charters and contracts makes it difficult to know exactly what landowners really do in these protected forest areas. Qualitative and quantitative surveys conducted in the Ciron valley (Gironde, France) reveal six typical behavioral profiles. Three of them reflect a voluntary pro-environmental commitment that can be explained by ethical, practical or even economic reasons. They consider the Natura 2000 area as a laboratory for testing environmental and forestry transition paths. (JEL: Q23, Q57, C83, D90, Q5).