Both Chestnut-necklaced Partridge found at Peninsula Malaysia and Borneo belong to 2 sub-species Arborophila charltonii charltonii (S Thailand to S Myanmar and Malay Peninsula) – very less sighting     Arborophila charltonii graydoni (N Borneo) – quite common at lowland forest @Sabah – Borneo Subspecies Endemic The head, belly, wing are the major different for both … Continue reading Chestnut-necklaced Partridge: Borneo & P. Malaysia