Circaetus | |
---|---|
Short-toed snake eagle (Circaetus gallicus) | |
Scientific classification | |
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.
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.
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]
Common name | Scientific name and subspecies | Range | Size and ecology | IUCN status and estimated population |
---|---|---|---|---|
Short-toed snake eagle | Circaetus gallicus (Gmelin, JF, 1788) Two subspecies
| Mediterranean basin, into Russia and the Middle East, and parts of Asia | Size: Habitat: Diet: | LC |
Black-chested snake eagle | Circaetus pectoralis A. Smith, 1829 | southern Africa from Ethiopia and Sudan in the north to South Africa in the south and Angola in the southwest | Size: Habitat: Diet: | LC |
Beaudouin's snake eagle | 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 | Circaetus cinereus Vieillot, 1818 | West, East and southern Africa | Size: Habitat: Diet: | VU |
Southern banded snake eagle or fasciated snake eagle | Circaetus fasciolatus Kaup, 1847 | eastern Sub-Saharan Africa. | Size: Habitat: Diet: | LC |
Western banded snake eagle | 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 Zimbabwe | Size: Habitat: Diet: | LC |
Circaetus rhodopensis (late Miocene of Bulgaria) [5]
Circaetus haemusensis (early Pleistocene of Bulgaria) [6]
Falcons are birds of prey in the genus Falco, which includes about 40 species. Falcons are widely distributed on all continents of the world except Antarctica, though closely related raptors did occur there in the Eocene.
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.
The Accipitridae is one of the three families within the order Accipitriformes, and is a family of small to large birds of prey with strongly hooked bills and variable morphology based on diet. They feed on a range of prey items from insects to medium-sized mammals, with a number feeding on carrion and a few feeding on fruit. The Accipitridae have a cosmopolitan distribution, being found on all the world's continents and a number of oceanic island groups. Some species are migratory. The family contains 255 species which are divided into 70 genera.
Buteo is a genus of medium to fairly large, wide-ranging raptors with a robust body and broad wings. In the Old World, members of this genus are called "buzzards", but "hawk" is used in the New World. As both terms are ambiguous, buteo is sometimes used instead, for example, by the Peregrine Fund.
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".
Gyps is a genus of Old World vultures that was proposed by Marie Jules César Savigny in 1809. Its members are sometimes known as griffon vultures. Gyps vultures have a slim head, a long slender neck with downy feathers, and a ruff around the neck formed by long buoyant feathers. The crown of their big beaks is a little compressed, and their big dark nostrils are set transverse to the beak. They have six or seven wing feathers, of which the first is the shortest and the fourth the longest.
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.
Moorhens—sometimes called marsh hens—are medium-sized water birds that are members of the rail family (Rallidae). Most species are placed in the genus Gallinula, Latin for "little hen". They are close relatives of coots. They are often referred to as (black) gallinules. Recently, one of the species of Gallinula was found to have enough differences to form a new genus Paragallinula with the only species being the lesser moorhen.
The bird genus Eremophila comprises the two horned larks.
The plumbeous kite is a bird of prey in the family Accipitridae that is resident in much of northern South America. It is migratory in the northern part of its range which extends north to Mexico. It feeds on insects which it catches either from a perch or while in flight.
Lullula is the genus of woodlarks, songbirds in the family Alaudidae. There is only one remaining extant species, the woodlark which is found in Europe, the mountains of northern Africa, the Middle East and western Asia. The remainder are known only from the fossil record.
Aquila is the genus of true eagles. The genus name is Latin for "eagle", possibly derived from aquilus, "dark in colour". It is often united with the sea eagles, buteos, and other more heavyset Accipitridae, but more recently they appear to be less distinct from the slenderer accipitrine hawks than previously believed. Eagles are not a natural group but denote essentially any bird of prey large enough to hunt sizeable vertebrate prey.
Actitis is a small genus of waders, comprising just two very similar bird species.
Melanocorypha is a small genus of birds in the lark family. The current genus name, Melanocorypha is from Ancient Greek melas, "black", and koruphos a term used by ancient writer for a now unknown bird, but here confused with korudos, "lark".
Pavo is a genus of two species in the pheasant family. The two species, along with the Congo peafowl, are known as peafowl.
Porzana is a genus of birds in the crake and rail family, Rallidae. Its scientific name is derived from Venetian terms for small rails. The spotted crake is the type species.
Galerida is a genus of birds in the family Alaudidae. The current scientific name is derived from Latin. Galerida was the name for a lark with a crest, from galerum, "cap". The name Galerida is synonymous with the earlier genus names Calendula, Heliocorys and Ptilocorys.
Chaetura is a genus of needletail swifts found in the Americas. Although they resemble swallows, the two are not at all closely related; this is instead a result of convergent evolution. Some members of Chaetura are long-distance migrants, while others are year-round residents.
Eremarida is a recently discovered extinct genus of lark in the family Alaudidae. The genus is known from a single fossil specimen found in eastern Europe, which serves as both the genus and specimen type.
Chauvireria is an extinct genus of small-sized landfowl, belonging to the family Phasianidae, and closely related to modern partridges, Old World quails and francolins. Two species are known from the genus : C. balcanica, the type species, and C. bulgarica. Both species lived in what is today Western Bulgaria during the Early Pleistocene.