The cinnamon bittern (''Ixobrychus cinnamomeus'') or chestnut bittern is a small Old World bittern, breeding in tropical and subtropical

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

from

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

east to

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

and

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

. It is mainly resident, but some northern birds

migrate Migration, migratory, or migrate may refer to: Human migration * Human migration, physical movement by humans from one region to another ** International migration, when peoples cross state boundaries and stay in the host state for some minimum le ...

short distances.

Taxonomy

The cinnamon bittern was formally described in 1789 by the German naturalist

Johann Friedrich Gmelin , fields = , workplaces = University of GöttingenUniversity of Tübingen , alma_mater = University of Tübingen , doctoral_advisor = Philipp Friedrich GmelinFerdinand Christoph Oetinger , academic_advisors = , doctora ...

in his revised and expanded edition of

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...

's ''

Systema Naturae ' (originally in Latin written ' with the ligature æ) is one of the major works of the Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the system, now known as binomial nomen ...

''. He placed it with herons, cranes, egrets and bitterns in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

'' Ardea'' and coined the

binomial name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

''Ardea cinnamomea''. Gmelin based his description on the "Chinese heron" that had been included by the English ornithologist John Latham in his multi-volume ''A General Synopsis of Birds''. Latham had based his own description on a partial specimen in the

British Museum The British Museum is a public museum dedicated to human history, art and culture located in the Bloomsbury area of London. Its permanent collection of eight million works is among the largest and most comprehensive in existence. It docum ...

. The cinnamon bittern is now placed with nine other species in the genus '' Ixobrychus'' that was introduced in 1828 by the Swedish naturalist

Gustaf Johan Billberg Gustaf Johan Billberg (14 June 1772, Karlskrona – 26 November 1844, Stockholm) was a Swedish botanist, zoologist and anatomist, although professionally and by training he was a lawyer and used science and biology as an avocation. The plant genu ...

. The genus name combines the

Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...

''ixias'', a reed-like plant and ''brukhomai'', to bellow. The specific epithet ''cinnamomeus'' is

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

meaning "cinnamon coloured". The species is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

: no

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

are recognised.

Description

It is a small species at length, though it is one of the larger ''Ixobrychus'' bitterns. Possessing a short neck and longish bill, the male is uniformly cinnamon above and buff below. The female is similar but her back and crown are brown, and the juvenile is like the female but heavily streaked brown below. When surprised on its nest or concerned, it assumes the characteristic attitude of bitterns, termed the ''on-guard''. The neck is stretched perpendicularly, bill pointing skyward, while the bird freezes and becomes very hard to see among the surrounding reeds.

Distribution and habitat

Cinnamon bittern, Van Vihar National Park Bhopal, May 3017

The species has an extremely large range throughout Asia; there are breeding populations from India to Indonesia. Vagrants have been in Micronesia, the Seychelles and Afghanistan, among other locations. Global population estimates are uncertain and range from 130,000 to 2,000,000 individuals.

Behaviour and ecology

The cinnamon bittern breeds in

reed bed A reedbed or reed bed is a natural habitat found in floodplains, waterlogged depressions and estuaries. Reedbeds are part of a succession from young reeds colonising open water or wet ground through a gradation of increasingly dry ground. As ...

s, nesting on platforms of reeds in shrubs. Four to six eggs are laid. The species can be difficult to see, given their skulking lifestyle and reed bed habitat, but tend to emerge at dusk, when they can be seen creeping almost cat-like in search of

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

s. Cinnamon bitterns feed on

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

and

amphibian Amphibians are tetrapod, four-limbed and ectothermic vertebrates of the Class (biology), class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terres ...

References

{{Taxonbar, from=Q204111 cinnamon bittern cinnamon bittern Birds of East Asia Birds of South Asia Birds of Southeast Asia cinnamon bittern cinnamon bittern Birds of Nepal