The Common Kestrel ( Falco tinnunculus ) is a bird of prey species belonging to the kestrel group of the falcon family Falconidae.

Typical in-flight appearance of a Common Kestrel

Image: Common Kestrel 2. jpg | Adult male F. t. tinnunculus landing

In the cool-temperate parts of its range, the Common Kestrel migrates south in winter ; otherwise it is sedentary, though juveniles may wander around in search for a good place to settle down as they become mature.

When hunting, the Common Kestrel characteristically hovers about 10 – 20 m ( c. 30 – 70 ft ) above the ground, searching for prey, either by flying into the wind or by soaring using ridge lift.

European Pine Vole ( Microtus subterraneus ), a typical Common Kestrel prey since prehistoric times

The Common Kestrel starts breeding in spring ( or the start of the dry season in the tropics ), i. e. April / May in temperate Eurasia and some time between August and December in the tropics and southern Africa.

The Common Kestrel's closest living relative is apparently the Nankeen or Australian Kestrel ( F. cenchroides ), which probably derived from ancestral Common Kestrels settling in Australia and adapting to local conditions less than one million years ago, during the Middle Pleistocene.

The Rock Kestrel may be a distinct species F. rupicolus, more distantly related to the Common Kestrel proper than the Nankeen Kestrel ; its relationship to the other African and South Asian kestrel taxa remains insufficiently studied.

The Lesser Kestrel ( F. naumanni ), which much resembles a small Common Kestrel with no black on the upperside except wing and tail tips, is probably not very closely related to the present species, and the American Kestrel ( F. sparverius ) is apparently not a true kestrel at all.

Both species have much grey in their wings in males, which does not occur in the Common Kestrel or its close living relatives but does in almost all other falcons.

A number of subspecies of the Common Kestrel are known, though some are hardly distinct and may be invalid.

Common Kestrel.

* Live Streaming of Common Kestrel nest in Amadora, Portugal

Kestrel, Common

Kestrel, Common

Kestrel, Common

Kestrel, Common

Kestrel, Common

Breeding in a wider range of habitats than any of its relatives, the Common Tern nests on any flat, poorly vegetated surface close to water, including beaches and islands, and it readily adapts to artificial substrates such as floating rafts.

The adult Common Firecrest has a distinguishing face pattern showing a bright white supercilium ( eyebrow ) and black eye-stripe, and the juvenile usually shows enough of this face pattern to be readily distinguished from the plain-faced Goldcrest.

Alpine Swifts are readily distinguished from the Common Swifts by their larger size and their white belly and throat.

Common snapping turtles sometimes bask — though rarely observed — by floating on the surface with only their carapace exposed, though in the northern parts of their range they will also readily bask on fallen logs in early spring.

Tilia platyphyllos readily hybridises with Tilia cordata, the hybrid being the Common Lime Tilia × europaea ( syn.

The Common Myna is readily identified by the brown body, black hooded head and the bare yellow patch behind the eye.

Vocalizations are very similar to those of Common Yellowthroat, and are not readily distinguishable to the human ear.

As the Common Cuckoo evolves to lay eggs that better imitate the host's eggs, the host species adapts and is more able to distinguish the cuckoo egg.

* Andrew Ainslie Common ( 1841 – 1903 ), built his own very large reflecting telescopes and demonstrated that photography could record astronomical features invisible to the human eye.

Common positions relate to defining a European foreign policy towards a particular third-country such as the promotion of human rights and democracy in Burma, a region such as the stabilisation efforts in the African Great Lakes, or a certain issue such as support for the International Criminal Court.

Dewey's most significant writings were " The Reflex Arc Concept in Psychology " ( 1896 ), a critique of a standard psychological concept and the basis of all his further work ; Democracy and Education ( 1916 ), his celebrated work on progressive education ; Human Nature and Conduct ( 1922 ), a study of the function of habit in human behavior ; The Public and its Problems ( 1927 ), a defense of democracy written in response to Walter Lippmann's The Phantom Public ( 1925 ); Experience and Nature ( 1925 ), Dewey's most " metaphysical " statement ; Art as Experience ( 1934 ), Dewey's major work on aesthetics ; A Common Faith ( 1934 ), a humanistic study of religion originally delivered as the Dwight H. Terry Lectureship at Yale ; Logic: The Theory of Inquiry ( 1938 ), a statement of Dewey's unusual conception of logic ; Freedom and Culture ( 1939 ), a political work examining the roots of fascism ; and Knowing and the Known ( 1949 ), a book written in conjunction with Arthur F. Bentley that systematically outlines the concept of trans-action, which is central to his other works.

He opposed the government's moves to restrict immigration, join the Common Market and reform the trade unions, was against the Vietnam War and Rhodesia's unilateral declaration of independence, and denounced the Soviet suppression of " socialism with a human face " in Czechoslovakia in 1968.

In English Common Law, real property, real estate, realty, or immovable property is any subset of land that has been legally defined and the improvements to it made by human efforts: any buildings, machinery, wells, dams, ponds, mines, canals, roads, etc.

* December 12 – Women's peace protest at Greenham Common: 30, 000 women hold hands and form a human chain around the 14. 5 km ( 9 mi ) perimeter fence.

Common causes include lightning and drought but wildfires may also be started by human negligence or arson.

a history of human flight, directed by Jim Freeman and Greg MacGillivray and produced for the Smithsonian Institution's National Air and Space Museum opens with a hot air balloon passing over the Wee House and the United Church of Craftsbury on the Common.

One of Andrew Ainslie Common 1883 photograph of the same nebula, the first to show that a long exposure could record new stars and nebulae invisible to the human eye.

Excellent examples of such human specimens are Haraldskær Woman and Tollund Man in Denmark, and Lindow man found at Lindow Common in England.

Common themes in Früvous songs include Canada and the " human experience ".

Common Vetch has also been part of the human diet, as attested by carbonised remains found at early Neolithic sites in Syria, Turkey, Bulgaria, Hungary and Slovakia.

" Common sense " ideas tend to relate to events within human experience, and thus commenurate with these scales.

Common and widespread, it has adapted well to human habitation and is a familiar bird of parks, gardens and farmland in Australia and New Guinea.

Primarily, the largest number of Common Cranes are found breeding in wooded swamps, bogs and wetlands and seem to require quiet, peaceful enivrons with minimal human interference.

* Common human variations

It reached South Asia likely through human transportation and cultivation several thousand years prior to the Common Era.

Around human habitations, Common Brushtails are inventive and determined foragers with a liking for fruit trees, vegetable gardens, and kitchen raids.

Six human rights groups ( Amnesty International Belgium, La Ligue des Droits de l ' Homme ( League for the Rights of Man ), Liga voor Mensenrechten ( League for Common Rights ), la Fédération Internationale des Droits de l ' homme ( International Federation for Human Rights ), Avocats sans Frontières ( Lawyers without Borders ) and Human Rights Watch ) called that loss of the universal jurisdiction component " a step backwards in the global fight against the worst atrocities.

In it, he articulates a vision of progressive values based on four core lessons: 1 ) Progressives stand with people, not privilege ; 2 ) Progressives believe in the Common Good and a government that offers a hand up ; 3 ) Progressives hold that all people are equal in the eyes of God and under the law ; and 4 ) Progressives stand for universal human rights and cooperative global security.

Graph of human population from 10, 000 Common Era | BCE – 2000 CE, showing the immense population growth since the 19th century

* Common bile duct, a structure in the human gastrointestinal tract

Common dolphins face a mixture of threats due to human influence.

Common Ravens nesting near sources of human garbage included a higher percentage of food waste in their diet, birds nesting near roads consumed more road-killed vertebrates, and those nesting far from these sources of food ate more arthropods and plant material.