Circaetinae
{{Short description|Subfamily of birds}}
{{more citations needed|date=December 2009}}
{{automatic taxobox
| name = Snake eagles
| image = Pithecophaga jefferyi front.jpg
| image_caption = Philippine eagle (Pithecophaga jefferyi)
| taxon = Circaetinae
| authority = Blyth, 1851
| type_genus = Circaetus
| type_genus_authority = Vieillot, 1816
| subdivision_ranks = Genera
| subdivision = See text.
}}
Circaetinae is a subfamily of the family Accipitridae which contains a group of medium to large broad-winged birds of prey.{{cite journal |last1=Lerner |first1=Heather R.L. |last2=Mindell |first2=David P. |title=Phylogeny of eagles, Old World vultures, and other Accipitridae based on nuclear and mitochondrial DNA |year=2005 |journal=Molecular Phylogenetics and Evolution |volume=37 |issue=2 |pages=327–346 |doi=10.1016/j.ympev.2005.04.010|pmid=15925523 |bibcode=2005MolPE..37..327L }}{{cite book |last1=Mindell |first1=David P. |last2=Fuchs |first2=Jérôme |last3=Johnson |first3=Jeff A. |chapter=Phylogeny, taxonomy, and geographic diversity of diurnal raptors: Falconiformes, Accipitriformes, and Cathartiformes |title=Birds of Prey |year=2018 |pages=3–32 |isbn=978-3-319-73744-7 |doi=10.1007/978-3-319-73745-4_1 | url=https://www.researchgate.net/publication/326086278}} The group is sometimes treated as tribe Circaetini.{{cite book |editor-first1=Dickinson |editor-last1=Edward C. |editor-first2= James V. |editor-last2=Remsen Jr. |title=The Howard and Moore Complete Checklist of the Birds of the World |volume=((1: Non-passerines)) |edition=4th |year=2013 |url=http://www.nhbs.com/the-howard-and-moore-complete-checklist-of-the-birds-of-the-world-volume-1-book |publisher=Aves Press }}{{cite web |title=ACCIPITRIDAE - Kites, Hawks and Eagles |url=https://www.aviansystematics.org/checklist?viewfamilies=36 |website=Trust for Avian Systematics |access-date=27 March 2024 }} These birds mainly specialise in feeding on snakes and other reptiles, which is the reason most are referred to as "snake-eagles" or "serpent-eagles". The exceptions are the bateleur, a more generalised hunter, and the Philippine eagle, which preys on mammals and birds.
All but one of the subfamily are restricted to warmer parts of the Old World: Spilornis and Pithecophaga in south Asia, the others in Africa. The short-toed eagle Circaetus gallicus migrates between temperate Eurasia and Africa, as well as being resident in India.
They have hooked beaks for tearing flesh from their prey, strong legs and powerful talons. They also have extremely keen eyesight to enable them to spot potential prey from a distance.
Taxonomy
The subfamily Circaetinae was introduced in 1851 by the English zoologist Edward Blyth with Circaetus as the type genus.{{ cite journal | last=Blyth | first=Edward | author-link=Edward Blyth | year=1851 | title=Conspectus of the ornithology of India, Burma, and the Malayan Peninsular, inclusiveof Sindh, Asám, Ceylon, and the Nicobar Islands | journal=Journal of the Asiatic Society of Bengal | volume=19 | issue= | pages=317–342 [317, 327] | url=https://www.biodiversitylibrary.org/page/40129040 }}{{cite book | last=Bock | first=Walter J. | author-link=Walter Joseph Bock | year=1994 | title=History and Nomenclature of Avian Family-Group Names | series=Bulletin of the American Museum of Natural History | volume=222 | publisher=American Museum of Natural History | location=New York | page=132 | hdl=2246/830 | url=http://digitallibrary.amnh.org/handle/2246/830 }}
The genus level cladogram of the Circaetinae shown below is based on a molecular phylogenetic study of the Accipitridae by Therese Catanach and collaborators that was published in 2024.{{Cite journal | last1=Catanach | first1=T.A. | last2=Halley | first2=M.R. | last3=Pirro | first3=S. | date=2024 | title=Enigmas no longer: using ultraconserved elements to place several unusual hawk taxa and address the non-monophyly of the genus Accipiter (Accipitriformes: Accipitridae) | journal=Biological Journal of the Linnean Society | pages=blae028 | doi=10.1093/biolinnean/blae028| url=https://www.biorxiv.org/content/biorxiv/early/2023/07/15/2023.07.13.548898.full.pdf }}
{{Clade | style=font-size:100%;line-height:100%
|label1=Circaetinae
|1={{clade
|1=Spilornis – serpent eagles (6 species)
|2={{clade
|1=Pithecophaga – Philippine eagle
|2={{clade
|1=Terathopius – Bateleur
|2=Circaetus – snake eagles (7 species)
}}
}}
}}
}}
The following taxonomy is based on the International Ornithological Congress.{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | editor3-last=Rasmussen | editor3-first=Pamela | editor3-link=Pamela C. Rasmussen | date=February 2025 | title=Hoatzin, New World vultures, Secretarybird, raptors | work=IOC World Bird List Version 15.1 | url=https://www.worldbirdnames.org/bow/raptors/| publisher=International Ornithologists' Union | access-date=22 March 2025 }}
class="wikitable" | ||
Image | Genus | Living Species |
---|---|---|
175px
|Spilornis {{small|G.R. Gray, 1840}} |
| ||
175px
|Pithecophaga {{small|Ogilvie-Grant, 1896}} |
| ||
175px | Circaetus {{small|Vieillot, 1816}} | * Congo serpent eagle, C. spectabilis
|
175px
|Terathopius {{small|Lesson, 1830}} |
| ||
175px | Eutriorchis {{small|Sharpe, 1875}}{{refn|group=note|Eutriorchis is genetically related to Gypaetus, and so might be classified with the Gypaetinae rather than Circaetinae. {{cite web|last1=Lerner|first1=Heather R. L.|last2=Mindell|first2=David P.|title=Accipitridae|url=http://tolweb.org/Accipitridae/26375/2006.05.09|website=The Tree of Life Web Project|date=9 May 2006}} }} | * Madagascar serpent eagle, E. astur |
=Notes=
{{Reflist|group=note}}
References
{{reflist}}
{{Circaetinae}}
{{Taxonbar|from=Q656019}}
{{Accipitriformes-stub}}