''Cuculus'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

cuckoo Cuckoos are birds in the Cuculidae ( ) family, the sole taxon in the order Cuculiformes ( ). The cuckoo family includes the common or European cuckoo, roadrunners, koels, malkohas, couas, coucals, and anis. The coucals and anis are somet ...

s which has representatives in most of the

Old World The "Old World" () is a term for Afro-Eurasia coined by Europeans after 1493, when they became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia in the Eastern Hemisphere, previously ...

, although the greatest diversity is in tropical southern and southeastern

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

Taxonomy

The

''Cuculus'' was introduced in 1758 by the Swedish naturalist

Carl Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

in the tenth edition of his ''

Systema Naturae ' (originally in Latin written ' with the Orthographic ligature, ligature æ) is one of the major works of the Sweden, Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the syste ...

''. The genus name is the

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

word for "cuckoo". The

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

is the

common cuckoo The cuckoo, common cuckoo, European cuckoo or Eurasian cuckoo (''Cuculus canorus'') is a member of the cuckoo order of birds, Cuculiformes, which includes the Geococcyx, roadrunners, the ani (bird), anis and the coucals. This species is a widesp ...

(''Cuculus canorus'').

Species

The genus contains 11 species: * Black cuckoo, ''Cuculus clamosus'' *

Red-chested cuckoo The red-chested cuckoo (''Cuculus solitarius'') is a species of cuckoo in the family Cuculidae. It is a medium-sized bird found in Africa, south of the Sahara. In Afrikaans, it is known as "Piet-my-vrou", after its call. Description The red- ...

, ''Cuculus solitarius'' * Lesser cuckoo, ''Cuculus poliocephalus'' * Sulawesi cuckoo or Sulawesi hawk-cuckoo, ''Cuculus crassirostris'' *

Indian cuckoo The Indian cuckoo or short-winged cuckoo (''Cuculus micropterus'') is a member of the cuckoo order of birds, the Cuculiformes, that is found in the Indian subcontinent and Southeast Asia. It ranges from India, Bangladesh, Bhutan, Nepal and Sri ...

, ''Cuculus micropterus'' * Madagascar cuckoo, ''Cuculus rochii'' * African cuckoo, ''Cuculus gularis'' *

Himalayan cuckoo ''Cuculus saturatus'', better well known as the Himalayan cuckoo or Oriental cuckoo, is a brooding parasitic bird that is part of the Cuculidae family. The species breeds from the Himalayas eastward to southern China and Taiwan. It migrates to so ...

, ''Cuculus saturatus'' *

Oriental cuckoo The Oriental cuckoo or Horsfields cuckoo (''Cuculus optatus'') is a bird belonging to the genus ''Cuculus'' in the cuckoo family Cuculidae. It was formerly classified as a subspecies of the Himalayan cuckoo (''C. saturatus''), with the name 'Ori ...

, ''Cuculus optatus'' (formerly ''horsfieldi'') (split from ''C. saturatus'') * Sunda cuckoo, ''Cuculus lepidus'' (split from ''C. saturatus'') *

Common cuckoo The cuckoo, common cuckoo, European cuckoo or Eurasian cuckoo (''Cuculus canorus'') is a member of the cuckoo order of birds, Cuculiformes, which includes the Geococcyx, roadrunners, the ani (bird), anis and the coucals. This species is a widesp ...

, ''Cuculus canorus'' Some sources also include the pallid cuckoo in this genus, although there is disagreement about appropriate classification. The hawk-cuckoos are now placed in a separate genus, ''

Hierococcyx ''Hierococcyx'' or hawk-cuckoos is a genus of birds in the family Cuculidae. They are distributed in South, Southeast, and East Asia. The resemblance to hawks gives this group the generic name of hawk-cuckoos. They are known to vocalize at their ...

'', while the pallid cuckoo belongs in ''

Cacomantis ''Cacomantis'' is a genus of cuckoos in the family Cuculidae. The name is from the Ancient Greek κακομαντις (''kakomantis'') meaning "prophet of evil". Most species have a round nostril and are mainly in brown and gray colours. The ta ...

''. These

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

s are of variable size with slender bodies, long tails and strong legs. Most occur in open forests, but some prefer more open country. Several species are migratory. These are vocal species, with persistent and loud calls. They feed on large

insect Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...

s, with hairy

caterpillar Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths). As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder ...

s, which are distasteful to many birds, being a speciality. One or two species will also take some fruit. ''Cuculus'' cuckoos are

brood parasite Brood may refer to: Nature * Brood, a collective term for offspring * Brooding, the incubation of bird eggs by their parents * Bee brood, the young of a beehive * Individual broods of North American periodical cicadas: ** Brood X, the largest ...

s, that is, they lay a single egg in the nests of various

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 generally have an anisodactyl arrangement of their ...

hosts. The best-known example is the European

. The female cuckoo in each case replaces one of the host's eggs with one of her own. The cuckoo egg hatches earlier than the host's, and the chick grows faster; in most cases the cuckoo chick evicts the eggs or young of the host species. ''Cuculus'' species lay coloured eggs to match those of their

hosts. Female cuckoos specialise in a particular host species (generally the species that raised them) and lay eggs that closely resemble the eggs of that host. A species may consist of several gentes, with each gens specialising in a particular host. There is some evidence that the gentes are genetically different from one another though other authorities state that as female cuckoos mate with males of any gens, genes flow between gentes.

Taxonomy

Species

References

Further reading