Arctic Warbler
Phylloscopus borealis
Estimated average number of individuals by week based on
eBird
data, Jul 2014 to Jun 2024
Peak week
Dec 24-Dec 30
Early date
22 Aug 2015
Late date
20 May 1990
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The commonest
Phylloscopus
warbler in Singapore. By early Oct, this species can be found in numbers across the island.