It is also hunted for its bill and tail feathers, which are used in ceremonial dress, and is captured for trade and food. Reduction in numbers in many areas is due to the cutting of forests for agriculture and timber. Status: Currently a CITES Appendix II species, and categorized as near threatened on the IUCN Red List. Habitat/range: Rhinoceros hornbills live in extensive areas of primary evergreen and tall secondary forest (up to 4,593 feet or 1,400 m) in Thailand, Malaysia and Sumatra. It breeds seasonally, with nests being placed in natural tree cavities in 9-15m height (Kemp and Boesman 2018). The female will molt during this time period in the nest. The Rhinoceros hornbill also forms large groups of up to 15 individuals (mostly young adults), which can be seen roaming the forest canopy together in Belum-Temengor Forest Complex (Yeap C.A. Chicks emerge after 39-51 days and fledge in 78-80 days.
One or two eggs are usually incubated 37-46 days.
This protects the female and eggs from predators. Together the pair “wall” the female in the nest with mud the male leaves a small hole through which he uses his long beak to pass food to the female (and hatchlings). Reproduction: The female nests in natural cavities 30- 49 feet (9-15 m) up in tall trees. Rounded wings make flight more difficult and extremely noisy (“whooshing” wing-beats sound like an overloaded locomotive). This loud, harsh vocalization can often be heard between pairs and often have a sharper note used for flight take- offs. They are fairly easy to locate due to their habits, size and sounds.ĭiet: Rhinoceros hornbills mainly feed on fruits (preferably figs) but also eat arthropods, lizards, tree frogs, and bird eggs.Ĭommunication: The large, bony, light-weight casque amplifies the honking squawk Rhinoceros hornbills use to communicate. Males often feed females, even during non-breeding seasons. Females weigh 4.5-5.1 pounds (2-2.3 kg).īehavior: During non-breeding seasons, rhinoceros hornbills can be seen foraging in pairs or small flocks. Size: Rhinoceros hornbills are very large birds. In addition to being smaller in size, female Rhinoceros hornbills have smaller casques with no black base and their red-rimmed eyes are white. The natural color of the casque and bill is creamy white but they become cosmetically colored by rubbing them against a gland beneath the tail, which exudes an orangish- red oil. Eyes of the male are red with black rims. Rhinoceros Hornbill 4.wav - mp3 version Rhinoceros Hornbill 4.wav - ogg version Rhinoceros Hornbill 4.wav - waveform Rhinoceros Hornbill 4.wav - spectrogram 8527.
The large bill and casque are yellow and orange-red (black at the base in males) bill is slightly recurved with upturned casque atop the base of the bill. Description: The head, back, breast and wings of the rhinoceros hornbill are black thighs and vent are white.
0 kommentar(er)
