Siberian House Martin Delichon lagopodum
Average number of individuals by week based on Singapore Bird Database data, Jul 2013 to Jun 2023 (all records)
Peak weeks Jan 01-Jan 07, Dec 24-Dec 30
Early date 28 Dec 2021
Late date 03 Jan 2021
Only two past records: in Jan and Dec 2021. It's unclear whether any of the house martins seen during the raptor migration period (Oct-Nov) are this species.