The grey-headed swamphen (''Porphyrio poliocephalus'') is a species of swamphen occurring from the Middle East and the Indian subcontinent to southern China and northern Thailand. It used to be considered a subspecies of the purple swamphen, but was elevated to full species status in 2015; today the purple swamphen is considered a

superspecies In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each oth ...

and each of its six subspecies groups are designated full species. The male has an elaborate courtship display, holding water weeds in his bill and bowing to the female with loud chuckles. The grey-headed swamphen was introduced to North America in the late 1990s due to avicultural escapes in the

Pembroke Pines, Florida Pembroke Pines is a city in southern Broward County, Florida, United States. The city is located 22 miles (35 km) north of Miami. It is a suburb of and the fourth-most populous city in the Miami metropolitan area. The population of Pembroke ...

area. State wildlife biologists attempted to eradicate the birds, but they have multiplied and can now be found in many areas of central and southern

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

. Ornithological authorities consider it likely that the swamphen will become an established part of Florida's avifauna.Pranty, Bill, Kim Schnitzius, Kevin Schnitzius, and Helen W. Lovell. 2000. Discovery, distribution, and origin of the purple swamphen (Porphyrio porphyrio) in Florida.' '' Florida Field Naturalist'' 28: 1–11. It was added to the American Birding Association checklist in February 2013.

Taxonomy and systematics

The grey-headed swamphen is one of 15 species in the genus ''Porphyrio''. It was classified as a subspecies of ''P. porphyrio'' until 2015, when the purple swamphen species complex was split into 6 species.

Subspecies

* ''P. p. poliocephalus'' Latham, 1801: The nominate subspecies. Found from

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

(including the

Andaman and Nicobar Islands The Andaman and Nicobar Islands is a union territory of India comprising 572 islands, of which only 38 are inhabited. The islands are grouped into two main clusters: the northern Andaman Islands and the southern Nicobar Islands, separated by a ...

) and

Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, ...

to southern

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

and northern

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

. * ''P. p. seistanicus'' Zarudny and Härms, 1911: Found from

Iraq Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...

and southern

Iran Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...

Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...

Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central Asia and South Asia. It is bordered by Pakistan to the Durand Line, east and south, Iran to the Afghanistan–Iran borde ...

, and northwestern India. There is also an introduced population in Florida. * ''P. p. caspius'' Hartert, 1917 : Found near the

Caspian Sea The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, ...

, northwestern Iran, and

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

References

{{Taxonbar, from=Q13173082 grey-headed swamphen Birds of West Asia Birds of South Asia grey-headed swamphen grey-headed swamphen