Shikra or BESRA
According to observations in Thailand, the Besra Hawk numbers observed passing through Khao Din Sor are very few compared to Shikras. Shikras are abserved to be resident in some parts of Thailand.
How then in Singapore, we are getting more records of "Besra" and not more "Shikras". Statistically, it should be more Shikra sightings compared to Besra.
Photo of Besra taken by Ayuwat - note the thick tail bands.
Besra sighted by us in 2020 at Henderson Waves - Photo by Adrian Silas Tay. Mine is way too small for any good details. Note the similarly thicky tail bars.
SHIKRAS
