© Marcel Burkhardt
The AERC recommends that each European country collects information about birds escaped from captivity. The Swiss Ornithological Institute is responsible for collecting such data in Switzerland and maintaining a list of species escaped from captivity. Note that those reports are not checked by the Swiss RC. However, if you see a species obviously escaped from captivity which is not on the list, please write a description or take some photographs (it is often easy with escaped wildfowl). Some species on this list were also recorded in Switzerland as wild birds (for example Western Cattle Egret, Ring-necked Duck, etc.).
List of species escaped from captivity in Switzerland (category E) on pdf file