Circaetus

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Circaetus
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Short-toed snake eagle (Circaetus gallicus)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Accipitriformes
Family: Accipitridae
Subfamily: Circaetinae
Genus: Circaetus
Vieillot, 1816
Type species
Falco gallicus
Gmelin, 1788

Circaetus, the snake eagles, is a genus of medium-sized eagles in the bird of prey family Accipitridae. They are mainly resident African species, but the migratory short-toed snake eagle breeds from the Mediterranean basin into Russia, the Middle East and India, and winters in sub-Saharan Africa and east to Indonesia.

Contents

Snake eagles are found in open habitats like cultivated plains arid savanna, but require trees in which to build a stick nest. The single egg is incubated mainly or entirely by the female.

Circaetus eagles have a rounded head and broad wings. They prey on reptiles, mainly snakes, but also take lizards and occasionally small mammals.

Taxonomy and species

The genus Circaetus was introduced in 1816 by the French ornithologist Louis Pierre Vieillot to accommodate a single species, the short-toed snake eagle, which is therefore considered the type species. [1] [2] The genus name is from the Ancient Greek kirkos, a type of hawk, and aetos, "eagle". [3] The genus contains six species. [4]

Genus Circaetus Vieillot, 1816 – six species
Common nameScientific name and subspeciesRangeSize and ecologyIUCN status and estimated population
Short-toed snake eagle

Short-toed Snake Eagle perched.jpg

Circaetus gallicus
(Gmelin, JF, 1788)

Two subspecies
  • C. g. gallicus - (Gmelin, JF, 1788)
  • C. g. sacerdotis - Ng, N, Christidis, Olsen, Norman & Rheindt, 2017
Mediterranean basin, into Russia and the Middle East, and parts of Asia
CircaeutusGallicusIUCN2019-2.png
Size:

Habitat:

Diet:
 LC 


Black-chested snake eagle

Black-chested snake-eagle (Circaetus pectoralis).jpg

Circaetus pectoralis
A. Smith, 1829
southern Africa from Ethiopia and Sudan in the north to South Africa in the south and Angola in the southwestSize:

Habitat:

Diet:
 LC 


Beaudouin's snake eagle

Flickr - Rainbirder - Beaudouin's Snake Eagle (Circaetus beaudouini).jpg

Circaetus beaudouini
Verreaux & Des Murs, 1862
Guinea-Bissau, Senegal and Gambia through southern Mali and Burkina Faso, Niger, northern Nigeria and Cameroon, southern Chad, Central African Republic and South Sudan.Size:

Habitat:

Diet:
 LC 


Brown snake eagle

Brown snake eagle, Kruger National Park (38184851511).jpg

Circaetus cinereus
Vieillot, 1818
West, East and southern AfricaSize:

Habitat:

Diet:
 VU 


Southern banded snake eagle or fasciated snake eagle

Circaetus fasciolatus, Chiboma, Sofala, Birding Weto, a.jpg

Circaetus fasciolatus
Kaup, 1847
eastern Sub-Saharan Africa.Size:

Habitat:

Diet:
 LC 


Western banded snake eagle

Western banded snake eagle (Circaetus cinerascens).jpg

Circaetus cinerascens
von Müller, 1851
Africa in the northern tropics from Senegal and Gambia east through to Ethiopia and then south to southern Angola and ZimbabweSize:

Habitat:

Diet:
 LC 


Fossil record

Circaetus rhodopensis (late Miocene of Bulgaria) [5]

Circaetus haemusensis (early Pleistocene of Bulgaria) [6]

Related Research Articles

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<span class="mw-page-title-main">Bird of prey</span> Paraphyletic group of birds

Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates. In addition to speed and strength, these predators have keen eyesight for detecting prey from a distance or during flight, strong feet with sharp talons for grasping or killing prey, and powerful, curved beaks for tearing off flesh. Although predatory birds primarily hunt live prey, many species also scavenge and eat carrion.

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<span class="mw-page-title-main">Short-toed snake eagle</span> Species of bird

The short-toed snake eagle, also known as the short-toed eagle, is a medium-sized bird of prey in the family Accipitridae, which also includes many other diurnal raptors such as kites, buzzards and harriers. The genus name Circaetus is from the Ancient Greek kirkos, a type of hawk, and aetos, "eagle". The specific gallicus means "of Gallia".

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<span class="mw-page-title-main">Circaetinae</span> Subfamily of birds

Circaetinae is a bird of prey subfamily which consists of a group of medium to large broad-winged species. The group is sometimes treated as tribe Circaetini. 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.

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References

  1. Vieillot, Louis Pierre (1816). Analyse d'une Nouvelle Ornithologie Élémentaire (in French). Paris: Deterville/self. p. 23.
  2. Mayr, Ernst; Cottrell, G. William, eds. (1979). Check-List of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 309.
  3. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p.  108. ISBN   978-1-4081-2501-4.
  4. Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2022). "Hoatzin, New World vultures, Secretarybird, raptors". IOC World Bird List Version 12.2. International Ornithologists' Union. Retrieved 4 December 2022.
  5. Boev, Z. 2012. Circaetus rhodopensis sp. n. (Aves, Accipitriformes) from the Late Miocene of Hadzhidimovo (SW Bulgaria). - Acta zoologica bulgarica, 64 (1): 5-12.
  6. Boev, Z. 2015. An Early Pleistocene Snake-eagle (Circaetus haemusensis sp. n. - Aves, Accipitriformes) from Varshets (NW Bulgaria). – Acta zoologica bulgarica. 67 (1), 2015: 127-138.