A total of 44 sight records and 4 capture records for 7 species of egrets and herons, Nycticorax nycticorax, Butorides striatus, Ardeola bacchus, Bubulcus ibis, Egretta alba, E.intermedia and E.garzetta, have been made on Rishiri Island(45°10′N, 141°15′E), northern Hokkaido, from 1974 to 1992.Of these records E.intermedia accounted for 29% of the total records, followed by B.ibis(20%). In most cases they were seen singly in marshes around ponds.The records concentrated in spring and early summer(21% in April, 61% in May and 10% in June).
