Madagascar serpent eagle
{{Short description|Species of bird}}
{{Speciesbox
| image = EutriorchisAsturKeulemans.jpg
| status = EN
| status_system = IUCN3.1
| genus = Eutriorchis
| parent_authority = Sharpe, 1875
| display_parents = 2
| species = astur
| authority = Sharpe, 1875
}}
The Madagascar serpent eagle (Eutriorchis astur) is a species of bird of prey in the family Accipitridae. It is placed in the monotypic genus Eutriorchis.{{cite book |editor1=Andy Purvis |editor2=John L. Gittleman |editor3=Thomas Brooks |year=2005 |title=Phylogeny and Conservation |volume=8 |series=Conservation Biology |chapter=Conservation status and geographic distribution of avian evolutionary history |pages=267–294 |author=Thomas M. Brooks |author2=John D. Pilgrim |author3=Ana S. L. Rodrigues |author4=Gustavo A. B. Da Fonseca |name-list-style=amp |publisher=Cambridge University Press |isbn=978-0-521-82502-3 |chapter-url=https://books.google.com/books?id=3W_TN0790vEC&pg=PA291}}
It is endemic to Madagascar. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Description
The Madagascar serpent eagle is a medium-sized raptor with a long rounded tail and short rounded wings.{{cite encyclopedia| title =Madagascar Serpent Eagle | encyclopedia =The Official World Wildlife Fund Guide to Extinct Species of Modern Times| volume =1| pages =13–14| publisher =Beacham Publishing | year =1997}} It is dark grey on its back and a lighter grey on its belly, breast, and throat. Dark barring covers the bird's body. It has yellow eyes and a sharp, hooked beak with strong talons. It measures {{convert|57|to|66|cm|in|abbr=on}} long with a wingspan of {{convert|90|to|110|cm|abbr=on}}.Raptors of the World By Ferguson Lees, Christie, David A.(2001)
Distribution and habitat
This bird inhabits dense, humid, and broadleafed evergreen forests in northeastern and east-central Madagascar. It rarely ventures above 550 meters (1800 ft).
Ecology and behavior
Conservation
This species was believed to be extinct, with the last confirmed sighting being from 1930. However, sightings in 1977 and 1988 led to hope for the species' rediscovery. It was rediscovered in 1993 by the Peregrine Fund.
The Madagascar serpent eagle is listed as an endangered species on the International Union for Conservation of Nature (IUCN) Red List, with an estimated population of 533 adults.{{Cite journal |last1=Sutton |first1=Luke J. |last2=Benjara |first2=Armand |last3=Roland |first3=Lily-Arison Rene de |last4=Thorstrom |first4=Russell |last5=McClure |first5=Christopher J. W. |date=January 2023 |title=Extensive protected area coverage and an updated global population estimate for the Endangered Madagascar Serpent-eagle Eutriorchis astur |url=https://www.cambridge.org/core/journals/bird-conservation-international/article/extensive-protected-area-coverage-and-an-updated-global-population-estimate-for-the-endangered-madagascar-serpenteagle-eutriorchis-astur/51DEBA617EF8C72C48B9669326B80A97 |journal=Bird Conservation International |language=en |volume=33 |pages=e48 |doi=10.1017/S0959270922000508 |issn=0959-2709|url-access=subscription }} This species is threatened by the destruction of its specialized habitat and a presumed low rate of reproduction.
Etymology
The prefix eu- is Greek for "good". Triorchis is a Latinization (Pliny the Elder)Pliny the Elder, [https://penelope.uchicago.edu/Thayer/L/Roman/Texts/Pliny_the_Elder/10*.html Historia Naturalis, Book 10], Chapters 9, 95, 96. [https://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus%3Atext%3A1999.02.0137&query=head%3D%23516 English translation] from the Perseus Digital Library. Both retrieved on Nov. 16, 2007. of Greek triórkhēs (τριόρχης), which Aristotle and Theophrastus used for a kind of hawk, possibly the common buzzard. The Greek word means "having three testicles".{{citation | last1 = Liddell | first1 = Henry George | last2 = Scott | first2 = Robert | author-link1 = Henry Liddell | author-link2 = Robert Scott (philologist) | year = 1940 | title = A Greek-English Lexicon | url = https://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D%23105095 | access-date = 2007-11-15}} This erroneous bit of anatomy has been connected with the ease of mistaking a bird's adrenal gland for a testicle.{{citation | last1 = Fisher | first1 = Peter | last2 = Higgins | translator = Humphrey| year = 1998 | title = Olaus Magnus: A Description of the Northern Peoples, 1555 | publisher = Hakluyt Society | page = 1011n | url = https://books.google.com/books?id=iMQMAAAAYAAJ | access-date = 2007-11-15|isbn =0-904180-59-X}}. See Olaus Magnus and Historia de Gentibus Septentrionalibus
References
{{Reflist|32em}}
External links
{{Commonscat|Eutriorchis astur}}
{{Wikispecies|Eutriorchis astur}}
- [http://www.birdlife.org/datazone/ebas/index.html?action=SpcHTMDetails.asp&sid=3398&m=0 BirdLife Species Factsheet.]
- [https://web.archive.org/web/20110526203146/http://www.peregrinefund.org/archived_conserve.asp?mode=view&ConserveID=52&category=Madagascar%20Project&conserveid1=68 Picture of captive bird]
{{Circaetinae}}
{{Vulture}}
{{Accipitrimorphae|A.|state=collapsed}}
{{Taxonbar|from=Q934902}}
Category:Endemic birds of Madagascar
Category:Birds of prey of Madagascar