The birds - mostly waterfowl such as ducks, geese and swans - are sort-of free-range, in that many types are able to get in and out of their (muddy) lake-containing enclosures, to mingle with visitors on the tar-mac-surfaced paths that run through the viewing areas. (You do a sort of a waterbirds of the world tour, following these tracks through the reserves.) The birds on site are also sort of ha