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{{Short description|Species of bird}}
{{Taxobox
{{Speciesbox
| name = Von der Decken's Hornbill
| name = Von der Decken's hornbill
| status = LC
| status = LC
| status_system = IUCN3.1
| status_system = IUCN3.1
| status_ref = <ref>{{IUCN|id=22682392 |title=''Tockus deckeni'' |assessors=[[BirdLife International]] |version=2013.2 |year=2012 |accessdate=26 November 2013}}</ref>
| status_ref = <ref name="iucn status 12 November 2021">{{cite iucn |author=BirdLife International |date=2016 |title=''Tockus deckeni'' |volume=2016 |page=e.T22682392A92943252 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22682392A92943252.en |access-date=12 November 2021}}</ref>
| image = Tockus deckeni (male) -Kenya-8.jpg
| image = Tockus deckeni (male) -Kenya-8.jpg
| image_caption = Male
| image_caption = Male
| image2 = Tockus deckeni -Gambia -female-8.jpg
| regnum = [[Animal]]ia
| image2_caption = Female
| phylum = [[Chordate|Chordata]]
| classis = [[Aves]]
| genus = Tockus
| species = deckeni
| ordo = [[Coraciiformes]]
| authority = ([[Jean Cabanis|Cabanis]], 1868)
| familia = [[Bucerotidae]]
| genus = ''[[Tockus]]''
| species = '''''T. deckeni'''''
| binomial = ''Tockus deckeni''
| binomial_authority = ([[Jean Cabanis|Cabanis]], 1869)
| range_map = Tockus deckeni - Distribution.png
| range_map = Tockus deckeni - Distribution.png
| range_map_caption = Distribution of Von der Decken's Hornbill (NOTE: Includes range of [[Jackson's Hornbill]])
| range_map_caption = Distribution of Von der Decken's hornbill (NOTE: Includes range of [[Jackson's hornbill]])
}}
}}

''' Von der Decken's Hornbill ''' (''Tockus deckeni'') is a [[hornbill]], found in [[East Africa]], especially to the east of the [[East African Rift]], from [[Ethiopia]] south to [[Tanzania]]. It is mainly found in thorn scrub and similar arid habitats. It often includes [[Jackson's Hornbill]] as a [[subspecies]]. It was named after the [[Germany|German]] explorer Baron [[Karl Klaus von der Decken]] (1833–1865).<ref>{{cite book|last=Beolens|first=Bo|title=Whose Bird? Men and Women Commemorated in the Common Names of Birds|year=2003|publisher=Christopher Helm|location=London|page=354|coauthors=Watkins, Michael}}</ref>
'''Von der Decken's hornbill''' ('''''Tockus deckeni''''') is a [[hornbill]] found in [[East Africa]], especially to the east of the [[East African Rift]], from [[Ethiopia]] south to [[Tanzania]]. It is found mainly in thorn scrub and similar arid habitats. [[Jackson's hornbill]] is often treated as a [[subspecies]] of it. It was named after the German explorer Baron [[Karl Klaus von der Decken]] (1833–1865).<ref>{{cite book|last=Beolens|first=Bo|title=Whose Bird? Men and Women Commemorated in the Common Names of Birds|year=2003|publisher=Christopher Helm|location=London|page=354|author2=Watkins, Michael }}</ref>


==Description==
==Description==
This species is a small hornbill which has mainly whitish underparts and head and blackish upperparts. It has a long tail and a long curved bill which lacks a casque. It is similar to the [[Red-billed Hornbill]] except for the bill colour, and the lack of spotting on the [[wing coverts]] in both male and female.
This species is a small hornbill with blackish upperparts and mainly whitish underparts and head. It has a long tail and a long curved bill which lacks a [[:wikt:casque|casque]]. It is similar to the [[red-billed hornbill]] except for the bill colour and the lack of spotting on the [[wing coverts]] in both male and female.


The species shows [[sexual dimorphism]]; the female has a black bill, whereas the male has a red bill with a cream tip and a black cutting edge.
The species shows [[sexual dimorphism]]; the female has a black bill, whereas the male has a red bill with a cream tip and a black cutting edge.
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|[[Image:Tockus deckeni (Male) -Antwerp Zoo-8.jpg|180px]]
|[[Image:Tockus deckeni (Male) -Antwerp Zoo-8.jpg|180px]]
|-
|-
|<center>Female</center>
|{{center|Female}}
|<center>Male</center>
|{{center|Male}}
|}
|}


==Breeding==
==Breeding==
During incubation, the female lays two or three white [[egg (biology)|eggs]] in a tree hole, which is blocked off with a cement made of mud, droppings and [[fruit]] pulp. There is only one narrow aperture, just big enough for the male to transfer food to the mother and the chicks.
During incubation, the female lays two or three white [[egg (biology)|eggs]] in a tree hole, which is blocked off with a cement made of mud, droppings and fruit pulp. There is only one narrow aperture, just big enough for the male to transfer food to the mother and chicks.


When the chicks and the female are too big to fit in the nest, the mother breaks out and rebuilds the wall, then both parents feed the chicks.
When the chicks and the female are too big for the nest, the mother breaks out and rebuilds the wall. Then both parents feed the chicks.


Captive breeding can be achieved by providing a small barrel or hollow tree with an entrance hole that is 5&nbsp;inches tall and 3&nbsp;inches wide. The birds will mud the hole shut once the hen is ready.
Captive breeding can be achieved by providing a small barrel or hollow tree with an entrance hole {{Convert|5|inch|cm}} tall and {{Convert|3|inch|cm}} wide. The birds will block off the hole once the hen is ready.


==Food and feeding==
==Food and feeding==
[[Image:Decken-Toko Tockus deckeni.JPG|left|thumb|Male with a large insect, Serengeti National Park, Tanzania]]
[[Image:Decken-Toko Tockus deckeni.JPG|left|thumb|Male with a large insect, Serengeti National Park, Tanzania]]
Von der Decken's Hornbill is [[Omnivore|omnivorous]], taking [[insect]]s, fruit and [[seed]]s. It feeds mainly on the ground and will form flocks outside the breeding season.
Von der Decken's hornbill is [[Omnivore|omnivorous]], taking [[insect]]s, fruit and seeds. It feeds mainly on the ground and will form flocks outside the breeding season. In captivity, Von Der Decken's hornbill will readily eat papaya, cantaloupe, blueberries, bananas, and apples. Live food such as crickets and mealworms should also be offered daily. Small rodents are readily taken but should only be offered two or three times a week.
{{clear}}
In captivity the Von Der Decken Hornbill will eat the following readily; papaya, cantaloupe, blueberries, bananas, and apples. also live food such as crickets and mealworms should be offered daily. Small rodents are readily taken but should only be offered 2 to 3 times per week.


==References==
==References==
{{Commons|Tockus deckeni}}
{{Reflist}}
{{Reflist}}


{{Taxonbar|from=Q285064}}
==External links==
{{Commons|Tockus deckeni|Von der Decken's Hornbill}}


[[Category:Tockus]]
[[Category:Tockus]]
[[Category:Hornbills]]
[[Category:Hornbills]]
[[Category:Birds of Kenya]]
[[Category:Birds of East Africa]]
[[Category:Birds of Africa]]
[[Category:Birds described in 1869]]
[[Category:Birds of Ethiopia]]
[[Category:Taxa named by Jean Cabanis]]
[[Category:Birds of Tanzania]]
[[Category:Animals described in 1869]]

Latest revision as of 21:34, 27 December 2023

Von der Decken's hornbill
Male
Female
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Bucerotiformes
Family: Bucerotidae
Genus: Tockus
Species:
T. deckeni
Binomial name
Tockus deckeni
(Cabanis, 1868)
Distribution of Von der Decken's hornbill (NOTE: Includes range of Jackson's hornbill)

Von der Decken's hornbill (Tockus deckeni) is a hornbill found in East Africa, especially to the east of the East African Rift, from Ethiopia south to Tanzania. It is found mainly in thorn scrub and similar arid habitats. Jackson's hornbill is often treated as a subspecies of it. It was named after the German explorer Baron Karl Klaus von der Decken (1833–1865).[2]

Description

[edit]

This species is a small hornbill with blackish upperparts and mainly whitish underparts and head. It has a long tail and a long curved bill which lacks a casque. It is similar to the red-billed hornbill except for the bill colour and the lack of spotting on the wing coverts in both male and female.

The species shows sexual dimorphism; the female has a black bill, whereas the male has a red bill with a cream tip and a black cutting edge.

Female
Male

Breeding

[edit]

During incubation, the female lays two or three white eggs in a tree hole, which is blocked off with a cement made of mud, droppings and fruit pulp. There is only one narrow aperture, just big enough for the male to transfer food to the mother and chicks.

When the chicks and the female are too big for the nest, the mother breaks out and rebuilds the wall. Then both parents feed the chicks.

Captive breeding can be achieved by providing a small barrel or hollow tree with an entrance hole 5 inches (13 cm) tall and 3 inches (7.6 cm) wide. The birds will block off the hole once the hen is ready.

Food and feeding

[edit]
Male with a large insect, Serengeti National Park, Tanzania

Von der Decken's hornbill is omnivorous, taking insects, fruit and seeds. It feeds mainly on the ground and will form flocks outside the breeding season. In captivity, Von Der Decken's hornbill will readily eat papaya, cantaloupe, blueberries, bananas, and apples. Live food such as crickets and mealworms should also be offered daily. Small rodents are readily taken but should only be offered two or three times a week.

References

[edit]
  1. ^ BirdLife International (2016). "Tockus deckeni". IUCN Red List of Threatened Species. 2016: e.T22682392A92943252. doi:10.2305/IUCN.UK.2016-3.RLTS.T22682392A92943252.en. Retrieved 12 November 2021.
  2. ^ Beolens, Bo; Watkins, Michael (2003). Whose Bird? Men and Women Commemorated in the Common Names of Birds. London: Christopher Helm. p. 354.