Valtibertina there are no organizzed observation points with the classical bird-houses, but in order do some real birdwatching, a walk along the paths that surround the marshy area of Montedoglio weir should be done.
Armed with patience, binoculars, camera and wearing comfortable camouflage-coloured clothing for an excursion along the weir’s banks, it isn’t hard to see a Kingfisher hunting food, a coloured Mallard about to take flight, or a Cormorant plunging into the water then perched on a rock or tree with spread wings to dry its feathers. There are two specific birdwatching areas at the Montedoglio weir. The first is the ANPIL Golene del Tevere, a protected area on the river downstream from the weir, where many lakes have formed with the dismantled gravel quarries. The vegetation abounding in reeds and bulrush attracts many different bird species, with luck a Little Bittern, Kingfisher, Coot or Mallard can be seen. The second area can be found along the banks of the Montedoglio weir, this three kilometre stretch goes from the Singerna bridge to Sigliano. Here many different wild duck and bird species can be seen, such as the Mallard, Teal, Turkish Fistion, Dun-Bird, Great-Crested Grebe, Hen Harrier, Diver, Royal Seagull and the Cormorant. These animals have multi-coloured plumage, beaks and eyes, ranging from bright green to yellow and red, plus curious and characteristic little white collars on some necks. Amidst the reeds and on the water’s surface nests can be seen, built with care and patience; some simple others elaborate like that of the Great-Crested Grebe – which builds a sort of floating “plate” anchored to the swamp grass. Whatever the weather the days are ranged by bird crys, dives and flights. The best period for birdwatching in from November to March, but whatever the season a bird can always be seen flying near to the water’s surface. A bird identification manual is a useful instrument for inexperienced birdwatchers, as are the Environmental Guides, specialized in identifying different species. The fascination of birdwatching consists in living to the full that magic moment of freedom whilst watching a bird in flight.