Bridled Tern Onychoprion anaethetus
Estimated average number of individuals by week based on eBird data, Jul 2012 to Jun 2022
Peak week Sep 17-Sep 23
Early date 24 Jul 1994
Late date 27 Jun 2021
Recorded both as a migrant and a resident; migrates through the Singapore Strait in fall and spring. Peaks on the bar chart may be affected by the frequency of pelagic trips at different times of the year.