Western silvereye
Western silvereye | |
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Western silvereyes at Ngilgi Cave, Western Australia | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Zosteropidae |
Genus: | Zosterops |
Species: | |
Subspecies: | Z. l. chloronotus
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Trinomial name | |
Zosterops lateralis chloronotus Gould, 1841
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Synonyms | |
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The western silvereye (Zosterops lateralis chloronotus) is a small greenish bird in the
Distribution and habitat
The western silvereye is found in
Description
The upperparts are entirely bright olive-green, with the wings and tail feathers grey, edged with green. The throat and undertail coverts are yellow-green, with the rest of the underparts grey. Circlets of small white feathers surround the eyes. Males are brighter yellow on the throat than females. The birds are 10–13 cm in length and weigh about 10 g.[1][2] They give a variety of high-pitched calls, with the distinctive and constantly uttered contact call a thin ‘psee’.[3]
Taxonomy and nomenclature
The western silvereye is the only green-backed form of the silvereye found in Australia, the other subspecies there having grey backs. According to Serventy and Whittell, who treat it as a full species, the bird also lacks the pre-nuptial moult which characterise the eastern Australian populations of the species.[1]
Because of such differences, the western silvereye has often been considered a full species. However,
The specific (or subspecific) name gouldi Bonaparte, 1850, was previously applied to the bird on the mistaken presumption that chloronotus Gould, 1841 was a junior secondary homonym of Dicaeum chloronothos Viellot, 1817 in Zosterops. Thus chloronotus is the senior synonym and has priority.[2]
Behaviour
Of the general behaviour of the western silvereye, Serventy and Whittell say:
”This is perhaps the commonest small bird in the Perth area and over much of the South-West. After the nesting season, by January, the birds gather into foraging flocks, which are noisily on the move until the pairs separate out again next spring. In the city and suburbs they play the role of the Sparrow (Passer domesticus) in the eastern States, or the tits (Parus) in Europe, visiting gardens, shrubberies and even the backyard fowl-run.”[1]
Breeding
The western silvereye usually builds a suspended cup-shaped
Feeding
Western silvereyes are
Relationship with humans
In Western Australia, the western silvereye is a declared pest of agriculture under the provisions of the Agriculture and Related Resources Protection Act 1976, administered by the Western Australian Department of Agriculture and Food.[3]
References
Notes
Sources
- Department of Environment and Conservation, Western Australia (12 December 2007). Silvereye (PDF) (Report). Fauna Note No.25. Retrieved 2010-06-15.
- Higgins, P.J.; Peter, J.M. & Cowling, S.J. (2006). ISBN 978-0-19-553996-7.
- Schodde, R. & Mason, I.J. (1999). The Directory of Australian Birds: Passerines. Melbourne: CSIRO Publishing. pp. 687–691. ISBN 0-643-06456-7.
- Serventy, D.L. & Whittell, H.M. (1976). ISBN 0-85564-101-0.