query: parent_taxon polihierax
supports: 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. Birds of prey, also known as raptors, refer to several species of predatory birds (i.e. birds that hunt and feed on rodents and other small animals). The term "raptor" is derived from the Latin word "rapere" (meaning to seize or take by force). These birds are characterized by keen vision that allows them to detect rodents during flight and powerful talons and beaks. The Accipitridae, one of the four families within the order Accipitriformes (the others being Cathartidae, Pandionidae and Sagittariidae), are a family of small to large birds 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 (except Antarctica) and a number of oceanic island groups. Some species are migratory. A genus ( genera) is a taxonomic rank used in the biological classification of living and fossil organisms in biology. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. Forest falcons are members of the genus "Micrastur", part of the family Falconidae. They are endemic to the Americas, found from Mexico in the north, south through Central America and large parts of South America, and as far south as northern Argentina. Most are restricted to humid tropical and subtropical forests, but the two most widespread species, the collared and the barred forest falcons, also range into drier and more open habitats. In biology, an organism is any contiguous living system, such as an animal, plant, fungus, archaeon, or bacterium. All known types of organisms are capable of some degree of response to stimuli, reproduction, growth and development and homeostasis. An organism consists of one or more cells; when it has one cell it is known as a unicellular organism; and when it has more than one it is known as a multicellular organism. Most unicellular organisms are of microscopic scale and are thus loosely described as microorganisms. Humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs. The falcons and caracaras are around 60 species of diurnal birds of prey that make up the family Falconidae. The family is divided into two subfamilies, Polyborinae, which includes the caracaras and forest falcons, and Falconinae, the falcons, kestrels and falconets ("Microhierax" and "Spiziapteryx"). They differ from the eagles of Accipitridae, in that falcons kill with their beaks instead of their taloned feet. They have a "tooth" on the side of their beak for the purpose. The name kestrel (from French "crécerelle", derivative from "crécelle", i.e. ratchet) is given to several different members of the falcon genus, "Falco". Kestrels are most easily distinguished by their typical hunting behaviour which is to hover at a height of around over open country and swoop down on prey, usually small mammals, lizards or large insects. Other falcons are more adapted to active hunting in flight. In addition, kestrels are notable for usually having a lot of brown in their plumage. Eagle is a common name for many large birds of prey of the family Accipitridae; it belongs to several groups of genera that are not necessarily closely related to each other. Caracaras are birds of prey in the family Falconidae. They are traditionally placed in subfamily Polyborinae with the forest falcons, but are sometimes considered to constitute their own subfamily Caracarinae, or as members of the true falcon subfamily, Falconinae. Caracaras are principally birds of South and Central America, just reaching the southern United States. Birds (Aves), also known as avian dinosaurs, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines, sometimes known as perching birds or, less accurately, as songbirds. The typical falconets, Microhierax, are a genus of bird of prey in the Falconidae family. They are found in southeast Asia and the smallest members of Falconiformes, averaging about in length and in weight. The smallest members of the genus are the relatively widespread black-thighed falconet, and the white-fronted falconet on the island of Borneo. The pygmy falcons , Polihierax , are a genus of bird of prey in the Falconidae family . It contains the following species : Pygmy falcon ( Polihierax semitorquatus ) White - rumped falcon or white - rumped pygmy - falcon ( Polihierax insignis ) - sometimes separated in Neohierax Binomial nomenclature (also called binominal nomenclature or binary nomenclature) is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (which may be shortened to just "binomial"), a binomen or a scientific name; more informally it is also called a Latin name. The first part of the name identifies the genus to which the species belongs; the second part identifies the species within the genus. For example, humans belong to the genus "Homo" and within this genus to the species "Homo sapiens". The "formal" introduction of this system of naming species is credited to Carl Linnaeus, effectively beginning with his work "Species Plantarum" in 1753. But Gaspard Bauhin, in as early as 1623, had introduced in his book "Pinax theatri botanici" (English, "Illustrated exposition of plants") many names of genera that were later adopted by Linnaeus.
candidates: accipitridae accipitriformes animal bird falco falconidae falconinae homo microhierax ostrich plant polyborinae spiziapteryx
answer: falconinae