There are many places to find birds in Rome. The historical gardens, the archaeological sites, and the banks of the Tiber represent the ideal habitat for numerous species of birds. Not far from the city center, areas such as coastal wetlands, the Veio Regional Park, Tolfa mountains, and the Tuscia are of great interest for birdwatching.
In the Botanic Gardens you can find many different types of birds. You can find hundreds of the Yellow-legged Gull, you can find Short-toed Treecreepers on occasion, along with: Blackcaps, Greenfinches, Long-tailed Tit, Monk Parakeets, Great Spotted Woodpecker, Goldfinch, Green Woodpeckers, and Kestrels.
You can find the Botanic Gardens at Largo Cristina di Svezia, 23 A-24, 00165 Roma RM.
The Roman Forum is another great spot for watching birds. For instance, the Rose-ringed Parakeet which can often be difficult to find in other places, is spotted there regularly. There are also the Blue Rock-thrush, Firecrest, Sardinian Warbler, Pheasant, and Song Thrush. There is also some overlap with the gardens!
The address of the Roman Forum is Via della Salara Vecchia, 5/6, 00186 Roma RM
Other places in Rome to find birds include the Colosseum, Palatine Hill, Capitoline Hill, Castle St Angelo, River Tiber, Vatican City State, and even Fiumicino Airport, where I spotted a Great Egret!
This list of places provides a great opportunity to spot birds, and get some sightseeing in.