The Chinese pond heron (''Ardeola bacchus'') is an

East Asia East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea and ...

n freshwater

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 lightweigh ...

of the

heron The herons are long-legged, long-necked, freshwater and coastal birds in the family Ardeidae, with 72 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genera ''Botaurus'' and ''Ixobrychus ...

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

, (Ardeidae). It is one of six species of birds known as "pond herons" (genus ''

Ardeola Pond herons (''Ardeola'') are herons, typically long with an wingspan. Most breed in the tropical Old World, but the migratory squacco heron occurs in southern Europe and the Middle East and winters in Africa. The scientific name comes from L ...

''). It is

parapatric In parapatric speciation, two subpopulations of a species evolve reproductive isolation from one another while continuing to exchange genes. This mode of speciation has three distinguishing characteristics: 1) mating occurs non-randomly, 2) gene ...

(or nearly so) with the

Indian pond heron The Indian pond heron or paddybird (''Ardeola grayii'') is a small heron. It is of Old World origins, breeding in southern Iran and east to the Indian subcontinent, Burma, and Sri Lanka. They are widespread and common but can be easily missed whe ...

(''A. grayii'') to the west and the

Javan pond heron The Javan pond heron (''Ardeola speciosa'') is a wading bird of the heron family, found in shallow fresh and salt-water wetlands in Southeast Asia. Its diet comprises insects, fish, and crabs. The Javan pond heron is typically 45 cm long ...

(''A. speciosa'') to the south, and these three are presumed to form a superspecies. As a group they are variously affiliated with the

squacco heron The squacco heron (''Ardeola ralloides'') is a small heron, long, of which the body is , with wingspan. It is of Old World origins, breeding in southern Europe and the Greater Middle East. Behaviour The squacco heron is a migrant, wintering ...

(''A. ralloides'') or the

Malagasy pond heron The Malagasy pond heron (''Ardeola idae''), also known as the Madagascar pond heron or Madagascar squacco heron, is a species of heron of the family Ardeidae. They breed in Madagascar, Réunion and the Seychells, and spend the non-breeding se ...

(''A. idae''). As of mid-2011 there are no published molecular analyses of pond heron interrelationships and

osteological Osteology () is the scientific study of bones, practised by osteologists. A subdiscipline of anatomy, anthropology, and paleontology, osteology is the detailed study of the structure of bones, skeletal elements, teeth, microbone morphology, funct ...

data is likewise not analyzed for all relevant comparison

taxa In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular nam ...

Description and ecology

The Chinese pond heron is typically long with white wings, a yellow bill with a black tip, yellow eyes and legs. Its overall colour is red, blue and white during breeding season, and greyish-brown and flecked with white at other times. Ardeola bacchus - Bueng Boraphet

It is found in shallow fresh and salt water

wetland A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...

s and

pond A pond is an area filled with water, either natural or artificial, that is smaller than a lake. Defining them to be less than in area, less than deep, and with less than 30% emergent vegetation helps in distinguishing their ecology from th ...

s in

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 adjacent

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...

and

subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Geographical z ...

. Essentially a lowland bird, its range is delimited by the

subarctic The subarctic zone is a region in the Northern Hemisphere immediately south of the true Arctic, north of humid continental regions and covering much of Alaska, Canada, Iceland, the north of Scandinavia, Siberia, and the Cairngorms. Generally, ...

regions in the north, and by the mountain ranges in the west and south. The species is prone to some vagrancy. One individual in breeding plumage was seen by the river at Bonzon near

Gangaw Gangaw ( my, ဂန့်ဂေါမြို့, ) is a town of Gangaw Township in Gangaw District in the Magway Division in Myanmar. Gangaw is also known as the City of Yaw, a certain region in Myanmar including Gangaw (), Tilin (), Saw () an ...

– just inside the

Chin State Chin State (, ) is a state in western Myanmar. The Chin State is bordered by Sagaing Division and Magway Division to the east, Rakhine State to the south, Bangladesh to the south-west, and the Indian states of Mizoram to the west and Manipur t ...

Burma Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...

– west of the species' usual range, on April 8, 1995. A stray bird stopping over on

Saint Paul Island, Alaska Saint Paul Island (russian: Остров Святого Павла, Ostrov Svyatogo Pavla) is the largest of the Pribilof Islands, a group of four Alaskan volcanic islands located in the Bering Sea between the United States and Russia. The city o ...

on August 4–9, 1997 was the first recorded occurrence of this

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

in North America. Its food consists of

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

crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

s. The Chinese pond heron often nests in mixed-

heronries A heronry, sometimes called a heron rookery, is a breeding ground for herons. Notable heronries Although their breeding territories are often on more protected small islands in lakes or retention ponds, herons breed in heronries (or also called ...

. It lays a clutch of 3–6 blue-green

eggs Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especial ...

. It is fairly common and not considered a

threatened species Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensa ...

by the

IUCN The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

.BirdLife International (2012)
''Ardeola bacchus''
In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2.

References

External links

* * * * {{Taxonbar, from=Q498102

Chinese pond heron The Chinese pond heron (''Ardeola bacchus'') is an East Asian freshwater bird of the heron family, (Ardeidae). It is one of six species of birds known as "pond herons" (genus ''Ardeola''). It is parapatric (or nearly so) with the Indian pond her ...

Birds of China Birds of East Asia