Ayuwat Jearwattanakanok discusses identification of 4 species of Harriers: Eastern Marsh Harrier (Circus spilonotus), Western Marsh Harrier (C. aeruginosus), Pied Harrier (C. melanoleucos), and Hen Harrier (C. cyaneus) and what key pointers to look for in the field.
Image: Albin Jacob
https://ayuwat.blog/2022/03/01/identification-of-harriers-in-thailand/
