Black-headed Gull Chroicocephalus ridibundus |
| Record ID | Date | Location | Count | Verdict |
|---|---|---|---|---|
| 302 | 03 Jan 2009 | Sungei Buloh Wetland Reserve | 1 | |
| 294 | 17 Dec 1995 | Lorong Halus | 1 | |
| 295 | 25 Dec 1997 | Mandai | 1 | |
| 296 | 01 Jan 1999 | Mandai | 1 | |
| 289 | 04 Jan 1987 | Sungei Seletar | 1 | |
| 288 | 21 Dec 1986 | Sungei Seletar | 1 | |
| 287 | 13 Nov 1986 | Kranji Bund | 1 | |
| 285 | 30 Dec 1983 | Johor Causeway | 1 | |
| 281 | 17 Jan 1928 | Singapore | 1 | |
| 280 | 16 Dec 1925 | East Coast of Singapore | 1 | |
| 1151 | 24 Jan 2009 | Mandai Mudflats | 1 | |
| 303 | 31 Dec 2011 | Seletar Dam | 1 | |
| 304 | 01 Jan 2017 | Pulau Ubin | 1 | |
| 305 | 04 Feb 2018 | Pulau Ubin | 1 | |
| 953 | 05 Dec 2020 | Marina East Drive | 1 | |
| 290 | 06 Dec 1987 to 09 Dec 1987 | Serangoon Estuary | 2 | |
| 301 | 06 Jan 2007 | Sungei Buloh Wetland Reserve | 2 | |
| 300 | 20 Jan 1996 | Mandai Mudflats | 2 | |
| 307 | 05 Jan 2020 to 14 Jan 2020 | Yishun Dam | 2 | |
| 10096 | 19 Dec 2021 | Sungei Buloh Wetlands Reserve | 2 | |
| 284 | 09 Jan 1983 | Serangoon | 2 | |
| 1148 | 11 Jan 1998 | Kranji Dam/Kranji Reservoir Park | 2 | |
| 298 | 06 Dec 2005 to 11 Dec 2005 | Kranji | 3 | |
| 1150 | 02 Dec 2005 to 06 Dec 2005 | Mandai Mudflats | 3 | |
| 1149 | 19 Jan 2003 | Kranji Dam/Kranji Reservoir Park | 3 | |
| 1025 | 29 Dec 2020 to 14 Jan 2021 | Pulau Ubin | 3 | |
| 1089 | 26 Dec 2011 | Sungei Buloh Wetland Reserve - East inc. Kranji Nature Trail | 5 | |
| 282 | 26 Jan 1948 | Singapore Straits | 7 | |
| 306 | 16 Dec 2019 to 13 Jan 2020 | Sungei Buloh Wetland Reserve | 12 | |
| 291 | 15 Feb 1992 | Pulau Ubin | 13 | |
| 292 | 07 Jan 1995 to 30 Jan 1995 | Kranji Reservoir | 16 |