---

Many thanks Lukasz. Now I've found some photos of Silvius, I can see you are absolutely right, but I can't find much information online to know what species this might be in the Spanish Pyrenees (not very high, maybe 800m). The only spanish record/photo I have found is for Silvius alpina (also known as Silvius vituli) and it looks just right, but I don't know if there are other, similar species it could be. Maybe someone can help?
Nick