Eastern Marsh Harrier
Circus spilonotus
Estimated average number of individuals by week based on
eBird
data, Jul 2013 to Jun 2023
Peak week
Nov 05-Nov 11
Early date
03 Oct 2017
Late date
11 Apr 2000
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Wintering birds of this species are hardly seen nowadays due to loss of their grassland habitat, so the raptor migration in Oct and Nov is your best bet for this species, as with most other scarce raptors.