19 May 2019Singapore Straits
16 May 2023Jurong Lake Gardens
20 May 2019 to 15 Jun 2019Pulau Ubin
17 Apr 2023 to 02 Jul 2023Pulau Ubin
04 Apr 2022 to 18 Jul 2022Chek Jawa Boardwalk
02 Feb 2022 to 17 May 2022Dairy Farm Nature Park
06 Apr 2021 to 22 Aug 2021Pulau Ubin
16 Apr 2023 to 03 Sep 2023Pulau Ubin
16 May 2021Kusu Island
17 May 2014Singapore Straits
14 May 2011Singapore Straits
14 May 2017Pulau Ubin
20 May 2019Ubin, West
15 May 2017Hindhede Park
10 May 1986 to 18 May 1986Seletar Catchment
20 May 1951Pulau Senang
14 May 1904Singapore
16 May 1899Singapore
30 Apr 2022 to 25 Jul 2022Sungei Buloh Wetland Reserve
25 Apr 2001 to 12 Jul 2001MacRitchie Reservoir
11 Apr 2015 to 05 Jul 2015Punggol
24 Apr 2005 to 23 Jul 2005Central Catchment Nature Reserve
11 Feb 2019 to 11 Jun 2019Sungei Buloh Wetland Reserve
24 Mar 1986 to 01 Aug 1986 (imprecise)Balmoral Park
22 Mar 1983 to 01 Aug 1983 (imprecise)Singapore
07 Jan 1986 to 21 May 1986Sime Road
15 Dec 1998 to 01 Jun 1999 (imprecise)Pulau Ubin
10 Dec 2016 to 01 Jun 2017Pulau Tekong
06 Dec 2019 to 31 May 2020Hindhede Quarry
12 May 2016 to 15 Sep 2016Gardens by the Bay