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 LC    Olive Ibis* Id (Atlas):
    Bostrychia olivacea

Description (10)
Image of Olive Ibis
 

Other Names (World)
Olive Ibis, Green Ibis, African Green Ibis, Dwarf Olive Ibis (bocagei), Sao Tome Ibis (bocagei)

Family
Threskiornithidae (Ibises, Spoonbills)

Size
65 - 75 cm

First Described (Guide)
(Du Bus De Gisignies, 1838)

Habitat
Dense lowland forest, glades in open sections of forest, swampy or marshy areas, along streams and rivers, in swamp-forest, mangroves, regenerating forest over abandoned plantations, montane forest.

Range (Guide)
Cameroon, Cote dIvoire, Congo, Congo [The Democratic Republic of the], Gabon, Ghana, Kenya, Liberia, Sao Tome e Principe, Sierra Leone, Tanzania [United Republic of].

Unknown to Equatorial Guinea (B) (NB).

Population
Estimated population is 3000 - 45000 (2020) and decreasing.

Status LC
For more information see BirdLife International Species Factsheet.

Food
Little known, but includes adult and larval insects, worms, snails, snakes and occasionally plant matter.

Voice
Xeno-Canto Sound Files (more (8)...)

 
Olive Ibis (Bostrychia olivacea) [XC344086]
     by Lars Lachmann from Castle Forest, Mt Kenya, Kenya (call)

 
Olive Ibis (Bostrychia olivacea) [XC768830]
     by Magnus Wadstein from Castle Forest Lodge, Mount Kenya Forest, Kirinyaga County, Kenya (flight call, pair in flight)

Nest
A platform of sticks located on a tree limb about 7.5 m above the ground.

Subspecies
Bostrychia olivacea (Sibley and Monroe 1990, 1993) has been split into Olive Ibis (Bostrychia olivacea) and Dwarf Ibis (Bostrychia bocagei) following Collar and Stuart (1985).

Sometimes placed in genus Lampribis, together with Spot-breasted Ibis (Bostrychia rara). Subspecies bocagei often considered a full species. Subspecies rothschildi of Principé I extinct.

The following 5 subspecies are recognised:

  • olivacea (Du Bus De Gisignies, 1838)   -  Sierra Leone, Liberia.
  • cupreipennis (Reichenow, 1903)   -  Cameroon, Gabon, Congo and Zaire.
  • bocagei (Chapin, 1923)   -  São Tomé I. (Gulf of Guinea). Considered by some authors to be a distinct species, Dwarf Ibis (Bostrychia bocagei).
  • akeleyorum (Chapman, 1912)   -  Mountains of Kenya and Tanzania.
  • rothschildi ! (Bannerman, 1919)   -  Formerly Príncipe I. (Gulf of Guinea). Extinct ca. 1901.



References
See References.


Files:
JPG files for Olive Ibis (Bostrychia olivacea) - 10 files


More Information

BirdLife International

For more information about the Olive Ibis see... Show Articles BirdLife International Species Factsheet.


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