The Shrinking World of Hornbills

Room service: A red-knobbed hornbill arrives with breakfast, which he will reg urgitate for his roughly three-month-old chick safely inside a nest hole in an Alstonia tree. Though its mother has left the confines of the nest, the chick remains within for another few weeks, dependent on its parents until it fledges.
Red-knobbed Hornbill (Aceros cassidix) male portrait in the canopy. Sulawesi, Indonesia.
This is the first time a rufous-necked hornbill has been captured by biologists . Pilai Poonswad and her team captured this hornbill and moved in quickly to extricate it from thrashing and squawking in the net. After measuring the nette d hornbill and strapping a radio transmitter to his back, they returned him to the task of feeding his mate.
Great Hornbill (Buceros bicornis) male swoops down as he leaves the nesting tree in the background after delivering food to the female inside. Khao Yai National Park, Thailand. IUCN Red List: Near Threatened
A Rhinoceros Hornbill holding a fig, flies past a Red Leaf Monkey feeding in the wild fig tree (Ficus dubia) in the rain forest canopy in Borneo. The Rhinoceros Hornbill is an Endangered Species (IUCN Red List: NT)
Great Hornbill (Buceros bicornis) female inside her nest cavity in a hollow tree, with chick. Female passes food brought by the male to chick. IUCN Red List: Near Threatened.
Sole provider for his confined mate and chick, a great pied hornbill in Thailand’s Khao Yai National Park delivers as many as 13 fruit and insect meals each day. The female has all but walled up the nest hole to guard against preditors.
Unfazed by the camera’s careful intrusion, this great hornbill (Buceros bicornis) passes a greed cat-eyed snake to her four week-old chick.
A female southern ground hornbill offers food to a male.
Male Knobbed Hornbill (Aceros cassidix) approaching his nest. A strangler fig tree is growing on the nest tree, and ocean is visible in the background. Tangkoko Batuangus/Dua Saudara Nature Reserve, Sulawesi Island, Indonesia.
Southern ground hornbills (Bucorvus cafer) in the savanna.
Portrait of a southern ground hornbill with red facial skin and neck.
A southern ground hornbill (Bucorvus cafer) that caught a scorpion.
Unwilling subject, a southern ground hornbill tries to escape Alan Kemp (green cap) and veterinarian Douw Grobler. After being sedated and measured and having his blood sampled, the male finds his way back to his lifelong mate.
A rufous-necked hornbill flashes his colors from a canopy perch.
Southern yellow-billed hornbills perform a territorial display.