* Feather-plucking has also been interpreted as a coping strategy for negative affective states e. g. stress, loneliness, boredom, induced by inappropriate social or environmental factors.

Feather-plucking, sometimes termed feather-picking, feather damaging behaviour or pterotillomania, is a maladaptive, behavioural disorder commonly seen in captive birds which chew, bite or pluck their own feathers with their beak, resulting in damage to the feathers and occasionally the skin.

Feather-plucking is generally regarded as a multifactorial disorder, although three main aspects of bird keeping may be related to the problem: ( 1 ) cage size often restricts the bird ’ s movements ; ( 2 ) cage design and barrenness of the environment often do not provide sufficient behavioural opportunities to meet the bird's sensitivity, intelligence and behavioural needs ; and ( 3 ) solitary housing, which fails to meet the high social needs of the bird.

* Feather-plucking is often attributed to a variety of social causes that may include poor socialisation or absence of parents during the rearing period and because of this, the individual subsequently expressing the disorder fails to learn appropriate preening behaviour.

This sentence would have most of the characteristics of a question, but it has some of the characteristics of a statement because the questioner has conveyed the fact that he has no faith in his own timepiece or the one attached to his car.

Observations of the radio emission of a planet which has an extensive atmosphere will probe the atmosphere to a greater extent than those using shorter wave lengths and should in some cases give otherwise unobtainable information about the characteristics of the solid surface.

Basically, this means that simpler processing equipment ( the mixture has good flowing characteristics ) and less external heat ( the foaming reaction is exothermic and develops internal heat ) are required in one-shot foaming, although, at the same time, the problems of controlling the conditions of one-shot foaming are critical ones.

For 10 years Sponsor has issued an annual survey of the size and characteristics of the Negro market and of successful techniques for reaching this market through radio.

Costly signaling is pointless if everyone has the same traits, resources, and cooperative intentions but become a potentially more important signal if the population increasingly varies on these characteristics.

With the phylogenetic classification, the taxon Labyrinthodontia has been discarded as it is a paraphyletic group without unique defining features apart from shared primitive characteristics.

However, astatine has a few metallic characteristics as well, such as plating out on a cathode, coprecipitating with metal sulfides in hydrochloric acid, and forming a cation in strong acidic solutions.

The localizationist model attempts to classify the aphasia by major characteristics and then link these to areas of the brain in which the damage has been caused.

An object is uniquely identified by its name and has a set of attributes — the characteristics and information that the object represents — defined by a schema, which also determines the kinds of objects that can be stored in Active Directory.

Bulgarian, along with the closely related Macedonian language ( collectively forming the East South Slavic languages ), has several characteristics that set it apart from all other Slavic languages: changes include the elimination of case declension, the development of a suffixed definite article ( see Balkan language area ) and the lack of a verb infinitive ; but it retains and has further developed the Proto-Slavic verb system.

Many of the genetic characteristics associated with yield ( e. g., enhanced growth ) are controlled by a large number of genes, each of which has a minimal effect on the overall yield.

It has a log structured storage architecture, which gives it different performance and concurrency characteristics.

Computer software has special economic characteristics that make its design, creation, and distribution different from most other economic goods.

Classical physics draws a distinction between particles and energy, holding that only the latter exhibit waveform characteristics, whereas quantum mechanics is based on the observation that matter has both wave and particle aspects and postulates that the state of every subatomic particle can be described by a wavefunction — a mathematical expression used to calculate the probability that the particle, if measured, will be in a given location or state of motion.

Each type of manure has its own physical, chemical, and biological characteristics.

Conventional insulin therapy has these characteristics:

In morphology and syntax, a clitic is a morpheme that has syntactic characteristics of a word, but depends phonologically on another word or phrase.

One of the most notable characteristics of New England ( or British )- heritage Congregationalism has been its consistent leadership role in the formation of " unions " with other churches.

If a compression test does give a low figure, and it has been determined it is not due to intake valve closure / camshaft characteristics, then one can differentiate between the cause being valve / seat seal issues and ring seal by squirting engine oil into the spark plug orifice, in a quantity sufficient to disperse across the piston crown and the circumference of the top ring land, and thereby effect the mentioned seal.

The Brahmaputra has its headwaters in the tableland of the world, the towering white headwalls of the Himalayas that are unknown to man as any other space on the planet.

But in our case -- and neither my wife nor I have extreme views on integration, nor are we given to emotional outbursts -- the situation has ruined one or two valued friendships and come close to wrecking several more.

However, in recent decades, for what doubtless are multiple reasons, an unannounced but nonetheless readily observable shift has occurred in both facets of national activity.

( Whether historical nationalism helped the peoples of the remainder of the world, and whether today's nationalism in the former colonial areas has equally beneficial aspects, are other questions.

Thus we are compelled to face the urbanization of the South -- an urbanization which, despite its dramatic and overwhelming effects upon the Southern culture, has been utterly ignored by the bulk of Southern writers.

Lucretius has remarked: `` The reason why all Mortals are so gripped by fear is that they see all sorts of things happening in the earth and sky with no discernable cause, and these they attribute to the will of God ''.

We have staved off a war and, since our behavior has involved all these elements, we can only keep adding to our ritual without daring to abandon any part of it, since we have not the slightest notion which parts are effective.

I think that we are here also talking of the kind of fear that a young boy has for a group of boys who are approaching at night along the streets of a large city.

Even in domains where detailed and predictive understanding is still lacking, but where some explanations are possible, as with lightning and weather and earthquakes, the appropriate kind of human action has been more adequately indicated.

There are many domains in which understanding has brought about widespread and quite appropriate reduction in ritual and fear.

He is a widower, his three children are dead, he has no one left on earth ; ;

Well, after everybody has followed the New England pattern of segregating one's children into private schools, only the poor folks are left.

Ideally speaking, it should be allowed to operate only where the public has a great stake in the continuity of supply or services, and where the actions of a single proprietor are secondary to the needs of society.

It has been a long time since he has seen any campaign money, and when the proposition is laid down to him as the friends of Mr. Hearst are laying it down these days he is quite likely to get aboard the Hearst bandwagon ''.

Some historians have found his point of view not to their taste, others have complained that he makes the Tory tradition appear `` contemptible rather than intelligible '', while a sympathetic critic has remarked that the `` intricate interplay of social dynamics and political activity of which, at times, politicians are the ignorant marionettes is not a field for the exercise of his talents ''.

The spirit of this group was that we were -- and are -- living in a world doomed to eternal punishment, but that God through Jesus Christ has provided a way of escape for those who confess their sins and accept salvation.

and has then gone on to argue, with unimpeachable consistency, that all the obviously non-propagandistic aspects of the book are simply inadvertent `` contradictions ''.

These biographical analogies are obvious, and far too much time has been spent speculating on their possible implications.

History has demonstrated many times that concerts of nations based solely on the negative spur of common danger are unlikely to survive when the external danger ceases to be dramatically urgent.

Patchen's musicians are outsiders in established jazz circles, and Patchen himself has remained outside the San Francisco poetry group, maintaining a self-imposed isolation, even though his conversion to poetry-and-jazz is not as extreme or as sudden as it may first appear.

These are, of course, the same people whose support he has only now rejected to seek the independent vote.

But if anything can bring home to Mr. Khrushchev the idea that he will not really get much enjoyment from watching this Braddock-against-the-Indians contest, it will probably be the fact that SEATO forces are ready to attempt it -- plus the fact that Moscow has something to lose from closing off disarmament and other bigger negotiations with Washington.

Despite all this, the idea apparently has captured the imagination of countless youths whose parents are probably more surprised by the response than anybody else.