Silver-backed Needletail
Hirundapus cochinchinensis
Average number of individuals by week based on
Singapore Bird Database
data, Jul 2016 to Jun 2023 (
all records
)
Peak weeks
Nov 12-Nov 18, Nov 19-Nov 25
Early date
08 Sep 1990
Late date
07 Apr 2001
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All confirmed records in the last 10 years have come during the months of Oct and Nov, and mostly seen at the end of Nov.