Macchiatonda Regional Nature Reserve covers 250 hectares of coastal plain, 50 km in the north of Rome, at the foot of the hilly spurs where Monti della Tolfa and Colli Ceriti meet. The coastal plain at the foot of Colli Ceriti has preserved its natural trend to turn to marshland despite the recent attempts of land reclamation. This trend has made easier the works of environmental recovery which, respecting the vegetational features, have enabled the widening of the wetlands, increasing the stop opportunities for the avifauna. As a matter of fact, the Nature Reserve is well known by bird watchers, since they can observe here many bird species during the year.