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Fraser's Eagle-Owl - BirdForum Opus

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Photo by AdamRiley
Atewa, Ghana, December 2011

Includes Usambara Eagle-Owl = Nduk Eagle-Owl

Ketupa poensis

Identification

A relatively small eagle owl at 39-44 cm (poensis)

  • Strong ear tufts
  • Upperside buffy-brown with dark barring
  • Scapulars form a row of creamy to buffy spots
  • Underside pale with brown bars
  • Facial disk rufous
  • Iris brown to dark brown

Variation

Subspecies vosseleri has irides yellow to orange or orange-brown and is overall larger with browner upperside.

Distribution

Africa:
Western Africa: Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, Nigeria, Cameroon, Central African Republic, Equatorial Guinea, Gabon, Congo, Democratic Republic of Congo, Angola and Zaire; additionally, seemingly allopatric in northeast Tanzania (Usambara and Uluguru Mts.)
Eastern Africa: Uganda, Rwanda and Tanzania
African Islands: Gulf of Guinea Islands: Bioko

Taxonomy

Subspecies vosseleri was formerly considered a full species under the name of Usambara Eagle-Owl, however, the vocalizations seem rather identical.

Subspecies

Two subspecies are recognized[1].

  • K. p. poensis
  • Rainforests of Liberia to western Uganda and northwest Angola as well as Bioko
  • K. p. vosseleri
  • northeast Tanzania (Usambara and Uluguru Mts.)

Habitat

A variety of humid forests in elevations from almost sea level to 2200 m asl (with regional variation). It seems to avoid the deepest center of old forests and are more frequent not too far from edges.

Behaviour

Food includes both invertebrates and small vertebrates including both mammals, birds and reptiles.

Main vocalization is a 3-5 second long trill with purring quality.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of Birds of the World: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  2. Gill, F, D Donsker, and P Rasmussen (Eds). 2023. IOC World Bird List (v 13.1)_red. Doi 10.14344/IOC.ML.13.1. http://www.worldbirdnames.org/
  3. Holt, D. W., R. Berkley, C. Deppe, P. L. Enríquez, J. L. Petersen, J. L. Rangel Salazar, K. P. Segars, K. L. Wood, J. S. Marks, and G. M. Kirwan (2022). Fraser's Eagle-Owl (Ketupa poensis), version 2.0. In Birds of the World (S. M. Billerman, P. Pyle, and N. D. Sly, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.fraeao1.02

Recommended Citation

External Links

GSearch checked for 2020 platform.1

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