It was also in recognition that wild birds, many of which are migratory, are a shared heritage of the Member States and that their effective conservation required international cooperation.
Seejuures tunnustati, et metslinnud, kellest paljud on ka rändlinnud, on liikmesriikide ühine pärand ja nende tõhus kaitse nõuab rahvusvahelist koostööd.