Tim Laman / Female Knobbed hornbill (Aceros cassidix) in flight. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tui De Roy / Woka Palm (Livingstonia rotundifolia) and buttress in lowland rainforest understory, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male delivering figs to a female sealed inside hollow nest cavity, Tangkoko Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male delivering figs to female sealed inside hollow tree, Tangkoko-Dua Saudara Reserve, Indonesia

Mark Jones / Sulawesi Red-knobbed Hornbill (Aceros cassidix) breeding male in a fruiting Fig tree (Ficus forsteni) 32 meters above the ground in rainforest canopy, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, In...

Mark Jones / Sulawesi Red-knobbed Hornbill (Aceros cassidix) breeding male in fruiting Fig (Ficus forsteni), Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tim Laman / Male Knobbed hornbill (Aceros cassidix) with fruit of wild fig (Ficus sp) Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Male Knobbed hornbill (Aceros cassidix) flying from nest. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) at nest hole. Chick is near fledging and female has emerged to assist male in feeding chick. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island,...

Tim Laman / Knobbed hornbill (Aceros cassidix) male (right) and female perched in tree. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Knobbed hornbill (Aceros cassidix) fledgling chick just after fledging. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Knobbed hornbill (Aceros cassidix) fledgling chick on the ground after emerging from nest (perhaps too early to fly?) Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Male Knobbed hornbill (Aceros cassidix) at nest hole. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Knobbed hornbill (Aceros cassidix) male (left) and female (right) perched in tree. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) at nest holding fruit in bill. Strangler fig tree growing on the nest tree. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed Hornbill (Aceros cassidix) perched. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) outside nest. Chick in nest is near fledging and female has emerged to assist male in feeding chick. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi...

Tim Laman / Knobbed hornbill (Aceros cassidix) chick peering out from the nest hole, Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) feeding chick in nest. Chick is near fledging and female has emerged to assist male in feeding chick. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawes...

Tim Laman / Female Knobbed hornbill (Aceros cassidix) calling in tree. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Male Knobbed hornbill (Aceros cassidix) flying to nest, Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Male Knobbed hornbill (Aceros cassidix) with fruit of wild fig (Ficus) Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) female at nest. Chick is near fledging and female has emerged to assist male in feeding chick. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Islan...

Tim Laman / Female Knobbed hornbill (Aceros cassidix) preening in tree. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Knobbed Hornbill (Aceros cassidix) chick peering out from nest hole. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) perched in tree. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.

Tim Laman / Female Knobbed hornbill (Aceros cassidix) at nest hole. Chick in nest is near fledging and female has emerged to assist male in feeding chick. Tangkoko Batuangus / Dua Saudara Nature Reserve, Sulawesi...

Michael & Patricia Fogden / Finch-billed Mynah (Scissirostrum dubium) nest colony in tree, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male, Tangkoko Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Lianas in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Celebes Black Macaque (Macaca nigra) male sleep in tree in rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Spectral Tarsier (Tarsius tarsier) in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Spectral Tarsier (Tarsius tarsier) in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Spectral Tarsier (Tarsius tarsier) in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Dwarf Cuscus (Strigocuscus celebensis) mother and young in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi Indonesia

Michael & Patricia Fogden / Reticulated Python (Python reticulatus) coiled on tree trunk, Tangkoko-Dua Saudara Nature Reserve, Sulawesi

Michael & Patricia Fogden / Reticulated Python (Python reticulatus) camouflaged in leaf litter in rainforest, Tangkoko Nature Reserve Sulawesi

Michael & Patricia Fogden / Handkerchief Butterfly or Wood Nymph, flying through the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Handkerchief Butterfly or Wood Nymph, male chasing female through rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Handkerchief Butterfly or Wood Nymph, male and female flying during courtship, in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Handkerchief Butterfly or Wood Nymph, in the rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Michael & Patricia Fogden / Reticulated Python (Python reticulatus) camouflaged in leaf litter in rainforest, Tangkoko-Dua Saudara Nature Reserve, Sulawesi

Tui De Roy / Bear Cuscus (Ailurops ursinus) an endemic marsupial feeding on False Banyon (Ficus altissima) fruit, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Tarictic Hornbill (Penelopides panini) cooperative nesting, non-breeding female with male and helper, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Tarictic Hornbill (Penelopides panini) male delivering Figs to female sealed inside hollow tree, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Tarictic Hornbill (Penelopides panini) male delivering Figs to female sealed inside hollow tree, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Tarictic Hornbill (Penelopides panini) male attending nest cavity in Strangler Fig, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / True Fig Shell (Ficus variegata) with heavy fruit growing on trunk, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / False Banyon (Ficus altissima) brief heavy crop of red fruit attractins numerous frugivores when red, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / False Banyon (Ficus altissima) surrounded by fruit after simultaneous ripening of heavy nutritious crop, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / True Fig Shell (Ficus variegata) with fruits growing on buttressed roots, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Celebes Black Macaque (Macaca nigra) stripping fig (Ficus forstini) of ripe fruit, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male in a fruiting fig (Ficus forsteni) tree, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Tarictic Hornbill (Penelopides panini) male standing guard over nest cavity, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) female before sealing herself inside nest cavity for four months, Tangkoko-Dua Saudara Nature Reserve, Indonesia

Tui De Roy / Celebes Black Macaque (Macaca nigra) mother with infant, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Celebes Black Macaque (Macaca nigra) grooming session which cements troop bond, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Bear Cuscus (Ailurops ursinus) an endemic marsupial feeding on False Banyon (Ficus altissima) rehabilitated orphan, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Bear Cuscus (Ailurops ursinus) an endemic marsupial feeding on False Banyon (Ficus altissima) rehabilitated orphan, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Fishtail Palm (Caryota mitis) and Woka Palms (Livingstonia rotundifolia) in small forest floor sun gap, Tangkoko-Dua Saudara Reserve, Sulawesi, Indonesia

Tui De Roy / Tarictic Hornbill (Penelopides panini) male delivering Figs (Ficus forstini) to female sealed inside hollow tree, Tangkoko-Dua Saudara Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) breeding male in a fruiting Fig (Ficus forsteni) tree, 32 meters above the ground in rainforest canopy, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, I...

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male delivering figs to female sealed inside hollow tree, Tangkoko-Dua Saudara Reserve, Sulawesi, Indonesia

Tui De Roy / False Banyon (Ficus altissima) surrounded by fallen fruit, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male delivering Figs to female sealed in hollow tree nest cavity, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Sulawesi Red-knobbed Hornbill (Aceros cassidix) male delivering Figs to female sealed in hollow tree nest cavity, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Mark Jones / Tarantula (Theraphosidae) large female wandering over bracket fungus, Tangkoko-Dua Saudara Nature Reserve, North Sulawesi, Indonesia

Tui De Roy / False Banyon (Ficus altissima) tree, with heavy red fruit attracts many frugivores, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / True Fig Shell (Ficus variegata) with heavy crop growing on trunk, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / True Fig Shell (Ficus variegata) tree, with fruits growing on buttress roots, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Weeping Fig (Ficus benjamina) view up dead host tree inside strangling air roots, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Weeping Fig (Ficus benjamina) with Tarictic Hornbill (Penelopides panini) nest cavity in host Natu tree trunk, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Celebes Black Macaque (Macaca nigra) group, mid-morning rest and grooming session, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Tui De Roy / Celebes Black Macaque (Macaca nigra) feeding on False Banyon (Ficus altissima) fruit, orphan rehabilitation center, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia

Mark Jones / Photographer Tui De Roy scaling giant rainforest tree to photograph canopy birds, Tangkoko-Dua Saudara Nature Reserve, Sulawesi, Indonesia