Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleNIGHT HERONS NYCTICORAX NYCTICORAX WINTERING IN THE PO RIVER VALLEY.AuthorsTOSI, GUIDO; TOSO, SILVANOPublicationIbis, 1979, Vol 121, Issue 3, p336ISSN0019-1019Publication typeArticleDOI10.1111/j.1474-919X.1979.tb06854.x