Besra Accipiter virgatus
Average number of individuals by week based on Singapore Bird Database data, Jul 2013 to Jun 2023 (all records)
Peak weeks Oct 15-Oct 21, Nov 05-Nov 11, Nov 12-Nov 18
Early date 17 Oct 2022
Late date 15 Mar 2018
One of the rare Accipiter species of Singapore. Five records across two years in 2019 and 2020, but none in 2021.