Northern Boobook
Ninox japonica
Average number of individuals by week based on
Singapore Bird Database
data, Jul 2013 to Jun 2023 (
all records
)
Peak week
Nov 05-Nov 11
Early date
25 Oct 2022
Late date
25 Apr 2020
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Peak migration for this species occurs in the first half of Nov, although it's occasionally sighted outside of this period. Teardrop-shaped underpart markings, compared to heart-shaped markings in Brown Boobook, are the main identification feature.