Identification of harriers in Thailand

Following up on my recent post about roosting behaviour of the harriers in Chiang Saen, in this post, I'd like to focus more on the identification of the 4 species that can be regularly seen in Thailand. These 4 species include Eastern Marsh Harrier (Circus spilonotus), Western Marsh Harrier (C. aeruginosus), Pied Harrier (C. melanoleucos),... Continue Reading →

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