Children (21 direct children, 27 direct and indirect children):
Great hornbill
Buceros bicornis
Rhinoceros hornbill
(tree size 3)
Buceros rhinoceros
Rufous hornbill
(tree size 3)
Northern rufous hornbill
Buceros leucocephalus
Buceros hemprichii
Buceros nasutus
Buceros pallidirostris
Buceros exarhatus
Buceros corrugatus
Buceros cassidix
Buceros albocristatus
Buceros mindanensis
Buceros homrai
Buceros semigaleatus
Buceros sharpii
Buceros subcylindricus
Buceros subruficollis
Buceros plicatus
Buceros bucinator
Buceros griseus
Buceros albirostris