Average number of individuals by week based on Singapore Bird Database data, Jul 2012 to Jun 2022 (
Feb 19-Feb 25, Feb 26-Mar 04, Mar 05-Mar 11 (2 more)
30 Nov 2019
20 Mar 2020
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The two confirmed records before 2022 were in November or later, but a recent sighting of one bird at Berlayer Creek is a new early date.