Malabar Grey Hornbill (Ocyceros griseus) [XC473489]
by Frank Lambert from Thattekad Bird Sanctuary--Urulanthanni, Idukki County, Kerala, India (call)
Malabar Grey Hornbill (Ocyceros griseus) [XC369371]
by Frank Lambert from Idamalayer Dam Road, Idukki County, Kerala, India (call)
Subspecies
Sometimes considered to form a superspecies with Sri Lanka Grey Hornbill (Ocyceros gingalensis), or are often treated as conspecific, but they differ in bare-part colours and some morphological and behavioural details.