| Ref | Site code | Season | Date | Count | IBA | Subregional IBA | RAMSAR |
|---|---|---|---|---|---|---|---|
| 6 | 28182712 | S | 1992-02-04 | 197 | |||
| 62 | 28182712 | W | 1992-08-05 | 1 | |||
| 152 | 28182712 | S | 1993-01-15 | 282 | |||
| 231 | 28182712 | W | 1993-07-17 | 14 | |||
| 340 | 28182712 | S | 1994-01-13 | 5400 | 5000 | ||
| 521 | 28182712 | S | 1995-01-18 | 327 | |||
| 728 | 28182712 | S | 1996-01-29 | 3766 | |||
| 1042 | 28182712 | S | 1997-02-07 | 426 | |||
| 2353 | 28182712 | S | 1998-02-04 | 338 | |||
| 2796 | 28182712 | S | 1999-02-08 | 2472 | |||
| 3293 | 28182712 | S | 2000-02-02 | 2887 | |||
| 3758 | 28182712 | S | 2001-02-08 | 210 | |||
| 4452 | 28182712 | S | 2002-02-14 | 1375 | |||
| 5046 | 28182712 | S | 2003-02-21 | 575 | |||
| 5594 | 28182712 | S | 2004-02-02 | 510 | |||
| 6316 | 28182712 | S | 2005-02-25 | 186 | |||
| 94003 | 28182712 | O | 2006-02-10 | 3859 | |||
| 8802 | 28182712 | S | 2007-02-20 | 86 | |||
| 501278 | 28182712 | S | 2009-02-13 | 571 | |||
| 503848 | 28182712 | S | 2010-02-15 | 65 | |||
| 502219 | 28182712 | S | 2011-03-01 | 1214 | |||
| 503901 | 28182712 | S | 2012-02-22 | 761 | |||
| 503172 | 28182712 | S | 2013-03-05 | 3 |