Tuesday 21 May
Spotted ground-thrush (Zoothera guttata)
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Spotted ground-thrush fact file
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Spotted ground-thrush description
As its name suggests, this mysterious bird is distinguishable by heavy black spotting on its white breast (4) (5). The upperparts are brownish with a band of white spots on the wing-coverts (2) (4). The face is whitish in colour with two black vertical stripes, one running through the eyes, and the other across the ear-coverts (2) (5). The legs are a fleshy-pink colour (3). There is slight variation between the five recognised subspecies, and juveniles are darker than adults with buff spotting on the head (2). The voice of this medium-sized bird is loud and melodic with flutey phrases of four to five notes (4) (5). It calls with a drawn out ‘sreee’ (4), and whilst foraging, a scarcely audible ‘tsii-tsii’ sound is made (2).
- Also known as
- Fischer’s ground-thrush.
- Turdus fischeri, Turdus guttatus, Zoothera fischeri.
- Grive terrestre de Fischer. Top
- Ndang’ang’a, P.K., Sande, E., Evans, S.W., Buckley, P., Hoffmann, D.A. and John, J. (2005). International Species Action Plan for the Spotted Ground Thrush Zoothera guttata. BirdLife International, Nairobi, Kenya and Royal Society for the Protection of Birds, Sandy, Bedfordshire, UK. Available at
- The short feathers which cover the ears.
- Animals with no backbone.
- Stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
- A diverse group of invertebrates, mainly marine, that have one or all of the following; a horny, toothed ribbon in the mouth (the radula), a shell covering the upper surface of the body, and a mantle or mantle cavity with a type of gill. Includes snails, slugs, shellfish, octopuses and squid.
- A population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.
- Small feathers concealing the bases of larger primary feathers on the wings.
- IUCN Red List (June, 2008)
- del Hoyo, J., Eliot, A. and Christie, D. (2005) Handbook of the Birds of the World. Volume 10: Cuckoo-Shrikes to Thrushes. Lynx Edicions, Barcelona.
- CMS (June, 2008)
- BirdLife International (June, 2008)
- Stevenson, T. and Fanshawe, J. (2004) Field Guide to the Birds of East Africa. Christopher Helm, London.
- Ndang’ang’a, P.K., Sande, E., Evans, S.W., Buckley, P., Hoffmann, D.A. and John, J. (2005) International Species Action Plan for the Spotted Ground Thrush Zoothera guttata. BirdLife International, Nairobi, Kenya .
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Spotted ground-thrush biology
This rare bird is difficult to observe in the wild due to its silent and shy nature, and ability to freeze motionless when disturbed (4). Despite its elusiveness, the nest, generally a bowl constructed from vegetation, twigs, feathers and mud, tends to be exposed and easy to find. This results in predation by snakes, raptors and domestic cats, which accounts for 50 percent of breeding failures. The spotted ground-thrush has a low breeding success rate of 10 to 20 percent (2) (4). Typically, a clutch size of two to three eggs is laid and nests are often reused after a brood has fledged or failed. The breeding season is from September to March in South Africa and subspecies in Malawi have been found breeding in November (4).
Foraging occurs mainly on the ground among leaf litter and on rotting wood (2), although the spotted ground-thrush can also be seen foraging amongst the lower branches of leafy trees. It feeds on invertebrates and their larvae, seeds, fruits and land molluscs (4), and nestlings are fed mainly on earthworms (2). Small home ranges used only for foraging are occupied by the spotted ground-thrush in its wintering grounds. Generally a solitary bird, it can be found in pairs or, on migration, in small parties (6).Top
Spotted ground-thrush range
The spotted ground-thrush has a wide but discontinuous distribution (4). Zoothera guttata guttata is found in South Africa, Z. g. fischeri, a migratory coastal subspecies, is found in Kenya and Tanzania and Z. g. belcheri occurs in Malawi. The remaining two subspecies are known only from single specimens, with Z. g. maxis being found in Sudan and Z. g. lippensi in the Democratic Republic of Congo (4).Top
Spotted ground-thrush habitat
Found in forests of various types, from coastal forests in South Africa, to moist montane evergreen forests in Malawi (4) (6). The spotted ground-thrush has a preference for forests with nearly complete canopy cover and deep leaf litter (4) (6). It winters in tall coastal forests, and migratory populations use moist bush and thicket or coastal dune forest (6).Top
Spotted ground-thrush statusTop
Spotted ground-thrush threats
The destruction of spotted ground-thrush habitat has meant that the small and severely fragmented populations are in decline (4). Bush fires, deforestation and the spread of exotic species have continued to decrease the amount of suitable habitat (6). In South Africa, the wintering habitat has been destroyed by mining, and in the coastal forests of Tanzania which are used as ‘stepping stones’ in migration, charcoal production has degraded habitat (6). Despite habitat loss being the primary threat to the spotted ground-thrush, its recovery is also limited by its own poor breeding success (6).Top
Spotted ground-thrush conservation
The spotted ground-thrush is protected by its listing on Appendix II of the Convention on Migratory Species (CMS) (3). An International Action Plan for the spotted ground-thrush was produced by BirdLife International, with a five year plan set out. It is hoped the plan, due to end in 2010, will improve knowledge on the species’ habitat requirements, breeding success and migration routes so that the population can be stabilised (4) (6).Top
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For further information on the spotted ground-thrush see:
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