A complex of heronries on the western Padana plain, isolated from each other and situated mainly inside small broadleaved woodlands surrounded by cultivated land, especially rice-fields. The main land-uses are nature conservation and agriculture. `Water management' is linked to rice-fields.
There are 12 main heronries: Abbazia Acqualunga, Bosco Basso, Carola, Cascina Notizia, Cascina Villarasca, Celpenchio, Porta Chiossa, Rinalda, Roggia Torbida, Sant'Alessandro, Verminesca, and Villa Biscossi. The site holds internationally important numbers of breeding Nycticorax nycticorax (second-largest breeding colony in Europe) and Egretta garzetta. The average total number of breeding herons exceeds 20,000 birds.
BirdLife International (2020) Important Bird Areas factsheet: Lomellina and Heronries of Pavia province. Downloaded from http://www.birdlife.org on 01/06/2020.