Abstract
We have conducted bird-banding research with 20 to 50 days annuary at Obitsu Estuary, Kisarazu City, Chiba (35°24'N, 140°55'E) from 1998 to 2003 (Table 1). We could get the notable records, such as first records of the Bonin Petrel Pterodroma hypoleuca and the Temminck's Stint Calidris temminckii for Obitsu Estuary (Table 2) as well as 67 recovery records of nine species, including more than ten years longevity record of the Kentish Plover Charadrius alexandrinus (Table 3).
