Office National des Forêts (ONF) Agence de Meurthe-et-Moselle Nancy FranceHolger BuschmannNABU (Nature and Biodiversity Conservation Union) of Lower Saxony Hannover GermanyThierry KinetNatagora Namur BelgiumArnaud LaudeloutNatagora Namur BelgiumRemi FontersLPO Isère Grenoble FranceCarlo BiancardiDepartment...