The Cape siskin (''Crithagra totta'') is a small

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

in the

finch The true finches are small to medium-sized passerine birds in the family Fringillidae. Finches have stout conical bills adapted for eating seeds and nuts and often have colourful plumage. They occupy a great range of habitats where they are usua ...

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

. It is an endemic resident breeder in the southern

Cape Province The Province of the Cape of Good Hope ( af, Provinsie Kaap die Goeie Hoop), commonly referred to as the Cape Province ( af, Kaapprovinsie) and colloquially as The Cape ( af, Die Kaap), was a province in the Union of South Africa and subsequen ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. It is bounded to the south by of coastline that stretch along the Atlantic Ocean, South Atlantic and Indian Oceans; to the ...

. This locally common but shy and unobtrusive

siskin The name siskin when referring to a bird is derived from an adaptation of the German dialect words ''sisschen'', ''zeischen'', which are diminutive forms of Middle High German (''zîsec'') and Middle Low German (''ziseke'', ''sisek'') words, which ...

is found in the southwestern and southern Cape's rocky slopes, coastal cliffs and fynbos-covered mountains. It also occurs in towns and the suburbs of

Cape Town Cape Town ( af, Kaapstad; , xh, iKapa) is one of South Africa's three capital cities, serving as the seat of the Parliament of South Africa. It is the legislative capital of the country, the oldest city in the country, and the second largest ...

Taxonomy and systematics

The Cape siskin was formerly placed in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

Serinus ''Serinus'' is a genus of small birds in the finch family Fringillidae found in Europe and Africa. The birds usually have some yellow in their plumage. The genus was introduced in 1816 by the German naturalist Carl Ludwig Koch. Its name is New L ...

'' but phylogenetic analysis using mitochondrial and nuclear DNA sequences found that the genus was

polyphyletic A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of conver ...

. The genus was therefore split and a number of species including the Cape siskin were moved to the resurrected genus ''

Crithagra ''Crithagra'' is a genus of small passerine birds in the finch family (Fringillidae). They live in Africa and Arabia. The species in this genus were formerly assigned to the genus '' Serinus'', but phylogenetic analysis of mitochondrial and nucl ...

''. The Cape siskin is closely related to the

Drakensberg siskin The Drakensberg siskin (''Crithagra symonsi'') is a small passerine bird in the finch family. It is an endemic resident breeder in the eastern Cape Province Transkei and western Natal in South Africa, and in Lesotho. This species is sometimes c ...

, and the two have sometimes been treated as

conspecific Biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particular species. Biochemist Linus Pauling stated that "Biological specificity is the set of characteristics of living organis ...

Description

The Cape siskin averages 13 cm in length. The flight feathers and tail have white spots on the tips which are diagnostic for both sexes, and especially visible in flight. The adult male has a light brown back, wing coverts, rump and upper tail and yellow underparts. The head, nape and sides of neck are yellowish grey and olive. Fine dark brown streaks are most prominent on the head and the sides of the throat. The female is similar but duller; she lacks grey on the head and has more streaking on the face and breast. The juvenile plumage is much like the female's but duller and with darker or browner underparts. There is no range overlap with the slightly larger Drakensberg siskin, which lacks the white spots on the flight feathers and tail and has less uniform upperparts. The Cape siskin's call is a ''voyp-veeyr'', often given in flight. and the song is a weak, pleasant warble similar to the

yellow-fronted canary The yellow-fronted canary (''Crithagra mozambica'') is a small passerine bird in the finch family. It is sometimes known in aviculture as the green singing finch. The yellow-fronted canary was formerly placed in the genus '' Serinus'', but phy ...

Behaviour

Breeding

One reason for the taxonomic uncertainty with this species is that, if it is a true siskin, it is the only one which breeds in cavities. A shallow cup nest is constructed in cracks or holes in rocks, on ledges or amongst vegetation, especially ferns. Natural hollows in trees are rarely used. There is a recent record of a nest in an artificial structure, the old lighthouse at

Cape Point Cape Point ( af, Kaappunt) is a promontory at the southeast corner of the Cape Peninsula, a mountainous and scenic landform that runs north-south for about thirty kilometres at the extreme southwestern tip of the African continent in South Af ...

. The nest is constructed by the female with fine plant material, lined with plant down and animal hair. The clutch is three or four, occasionally five, eggs, incubated by the female. She is fed by the male on the nest by regurgitation.

Feeding

The Cape siskin is seen in pairs or small flock, moving unobtrusively through bushes and scrub as it forages for seeds, buds and insects.

References

* Ian Sinclair, Phil Hockey and Warwick Tarboton, ''SASOL Birds of Southern Africa'' (Struik 2002) * Clement, Harris and Davis, ''Finches and Sparrows'' by
Western Cape Nature Conservation Board & Avian Demography Unit (pdf)

External links

* Cape siskin
Species text in The Atlas of Southern African Birds
{{Taxonbar, from=Q1302715 Cape siskin Endemic birds of South Africa Cape siskin Taxa named by Anders Sparrman