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 →