Parasitic Jaeger Stercorarius parasiticus
Average number of individuals by week based on Singapore Bird Database data, Jul 2012 to Jun 2022 (all records)
Peak week Oct 29-Nov 04
Early date 14 Oct 2018
Late date 08 May 2021
A pelagic trip in October would be the best way to find one of these, but many recent sightings have come from outside Singapore's territorial waters.