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Corvids are found worldwide except for the tip of South America and the polar ice caps. Starling, any of a number of birds composing most of the family Sturnidae (order Passeriformes), especially Sturnus vulgaris, a 20-cm (8-inch) chunky iridescent black bird with a long sharp bill. Human resources data is one example of data that can be classified as private. The major deity Odin was so associated with ravens throughout history that he gained the kenning "raven god"[b] and the raven banner was the flag of various Viking Age Scandinavian chieftains. , The diets of the starlings are usually dominated by fruits and insects. Establishing a valid name for the clade consisting of Sibley/Monroe's "pan-Sturnidae" would nonetheless be desirable to contrast them with the other major lineages of Muscicapoidea. Over 120 species are described. It might be that social complexity corresponds to their high cognition. White-throated magpie-jays are cooperatively breeding corvids where the helpers are mostly female. For large flocks or agricultural applications, starlings can be removed or deterred with a well-timed, organized scare campaign using strategically placed sophisticated audio or visual repellents, as well as deterrents that irritate the starlings… The family is naturally absent from the Americas and from large parts of Australia but is present over the majority of Europe, Africa and Asia. In some cases territories may only be guarded during the day, with the pair joining off-territory roosts at night. Does not qualify for a more at risk category. For government organizations, what would the effect on national security be if the data were disclosed? The extent to which starlings are important pollinators is unknown, but at least some are, such as the slender-billed starling of alpine East Africa, which pollinates giant lobelias.. Their total brain-to-body mass ratio is equal to that of non-human great apes and cetaceans, and only slightly lower than that of humans.. Many agencies classify data they collect from citizens as SBU. Data classified at a higher risk can create security and access requirements that do not exist for lower risks, which might not require much protection altogether. Bill Leman Bill Leman American robin.  Corvids also move their food around between hiding places to avoid thievery, but only if they have previously been thieves themselves (that is, they remember previous relevant social contexts, use their own experience of having been a thief to predict the behavior of a pilferer, and can determine the safest course to protect their caches from being pilfered). Other ornamentation includes elongated tail feathers and brightly coloured bare areas on the face. , Asian species are most common in evergreen forests; 39 species found in Asia are predominantly forest birds as opposed to 24 found in more open or human modified environments. , The scarecrow is an archetypal scare tactic in the agricultural business. , Clarification of the interrelationships of the corvids has been achieved based on cladistic analysis of several DNA sequences. This is typically data that will do the most damage to the organization should it be disclosed. With more than 30 subspecies of song sparrows alone, these spunky birds can be hard to spot and harder still to identify. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Flock of European, or common, starlings (.  A number of island species, which are more vulnerable to introduced species and habitat loss, have been driven to extinction, such as the New Zealand raven, or are threatened, like the Mariana crow. , Some species of starling are migratory, either entirely, like the Shelley's starling, which breeds in Ethiopia and northern Somalia and migrates to Kenya, Tanzania and southern Somalia, or the white-shouldered starling, which is migratory in part of its range but is resident in others. The position of the azure-winged magpie, which has always been a major enigma, is even less clear than before. It is possible that the American crow, due to humans increasing suitable habitat, will cause Northwestern crows and fish crows to decline.. Pretty soon, you too may be inspired to write a love letter to this singer, as Thoreau did in his 1852 journal, extolling the wood thrush’s evocation of “the liquid coolness of things drawn from the bottom of springs.” This is contradicted by the North American distribution of the most basal Mimidae. Classification of commercial or nongovernment organizations does not have a set standard. The nutcrackers were more accurate in their searches than the jackdaws and pigeons.  Several European and Asian species have been introduced to these areas as well as North America, Hawaii and New Zealand, where they generally compete for habitats with native birds and are considered to be invasive species. Nongovernment organizations have a lot of flexibility in setting the procedures that best suit their needs. They make angling tools of twigs and leaves trimmed into hooks, then use the hooks to pull insect larvae from tree holes. Other play involves the manipulation, passing, and balancing of sticks. . During the wintering months, corvids typically form foraging flocks. The Collared Myna has blackish upperparts; dark gray underparts; broad white collar on nape. S. vulgaris feeds on the ground and flies in tight flocks; vocal year-round, it mimics other birds’ notes and utters wheezy sounds of its own. The classifications for the sensitivity of data used in government and military applications are top secret, secret, confidential, sensitive but unclassified, and unclassified. One of the first signs that West Nile virus first arrived in the US in 1999 was the death of crows in New York. In a US study of American crows, common ravens and Steller's jays around campgrounds and human settlements, the crows appeared to have the most diverse diet of all, taking anthropogenic foods such as bread, spaghetti, fried potatoes, dog food, sandwiches, and livestock feed.  Over the years, much disagreement has arisen on the exact evolutionary relationships of the corvid family and their relatives. Omissions? ... 18-19 cm or 6-1/2 to 7-3/4 inches in length and is similar in size to a starling. Documented group games follow "king of the mountain", or "follow the leader", patterns. In fact the only habitat they do not typically occupy is the driest sandy deserts. Starlings are small to medium-sized passerine birds in the family Sturnidae. The starling species familiar to most people in Europe and North America is the common starling, and throughout much of Asia and the Pacific, the common myna is indeed common. , Members of the corvid family have been known to watch other birds, remember where they hide their food, then return once the owner leaves. Updates? , The ability to hide food requires highly accurate spatial memories. Military and intelligence organizations set their classifications on the ramifications of disclosure of the data. In South Africa, the red-winged starling is an important disperser of the introduced Acacia cyclops. What is the value or usefulness of the data?
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