Observational learning is learning that occurs through observing the behavior of others. It is a form of social learning which takes various forms, based on various processes. In humans, this form of learning seems to not need reinforcement to occur, but instead, requires a social model such as a parent, sibling, friend, or teacher with surroundings. Particularly in childhood, a model is someone of authority or higher status in an environment. In animals, observational learning is often based on classical conditioning, in which an instinctive behavior is elicited by observing the behavior of another, but other processes may be involved as well.
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. In colloquial English, they are known as the crow family or corvids. Currently, 135 species are included in this family. The genus Corvus containing 47 species makes up over a third of the entire family. Corvids (ravens) are the largest passerines.
The common raven is a large all-black passerine bird. It is the most widely distributed of all corvids, found across the Northern Hemisphere. It is a raven known by many names at the subspecies level; there are at least eight subspecies with little variation in appearance, although recent research has demonstrated significant genetic differences among populations from various regions. It is one of the two largest corvids, alongside the thick-billed raven, and is possibly the heaviest passerine bird; at maturity, the common raven averages 63 centimetres in length and 1.47 kilograms in mass. Although their typical lifespan is considerably shorter, common ravens can live more than 23 years in the wild. Young birds may travel in flocks but later mate for life, with each mated pair defending a territory.
A surgical mask, also known by other names such as a medical face mask or procedure mask, is a personal protective equipment used by healthcare professionals that serves as a mechanical barrier that interferes with direct airflow in and out of respiratory orifices. This helps reduce airborne transmission of pathogens and other aerosolized contaminants between the wearer and nearby people via respiratory droplets ejected when sneezing, coughing, forceful expiration or unintentionally spitting when talking, etc. Surgical masks may be labeled as surgical, isolation, dental or medical procedure masks.
Under the Umbrella Tree is a Canadian children's television series created by Noreen Young that originally aired on CBC from 1987 to 1993. It was produced by CBC and Noreen Young Productions, and later by The Disney Channel, which began airing it on May 7, 1990.
"The Doctor Dances" is the tenth episode of the first series in the reboot of the British science fiction television programme Doctor Who, which was first broadcast on BBC One on 28 May 2005. It is the second of a two-part story, following the broadcast of "The Empty Child" on 21 May.
In Abrahamic and European mythology, medieval literature and occultism, the language of the birds is postulated as a mystical, perfect divine language, Adamic language, Enochian, angelic language or a mythical or magical language used by birds to communicate with the initiated.
Ghostface is a fictional identity that is adopted by the primary antagonists of the Scream franchise. The figure was originally created by Kevin Williamson, and is primarily mute in person but voiced over the phone by Roger L. Jackson, regardless of who is behind the mask. The disguise has been adopted by various characters in the movies and in the third season of the television series.
Corvus is a widely distributed genus of passerine birds ranging from medium-sized to large-sized in the family Corvidae. It includes species commonly known as crows, ravens, and rooks. The species commonly encountered in Europe are the carrion crow, hooded crow, common raven, and rook; those discovered later were named "crow" or "raven" chiefly on the basis of their size, crows generally being smaller. The genus name is Latin for "raven".
"The Pager" is the fifth episode of the first season of the HBO original series The Wire. The episode was written by Ed Burns from a story by David Simon and Ed Burns and was directed by Clark Johnson. It originally aired on June 30, 2002.
On the night of November 22, 1987, the television signals of two stations in Chicago, Illinois, were hijacked, briefly sending a pirate broadcast of an unidentified person wearing a Max Headroom mask and costume to thousands of home viewers.
The Mariana crow is a species of the crow family from the tropical Western Pacific. It is a glossy black bird about 15 inches (38 cm) long and known only from the islands of Guam and Rota.
The long-billed crow is a crow that is endemic to the Northern Maluku Islands. This crow is large with glossy plumage, a large bill and white irises. It is classified by the International Union for Conservation of Nature as a "near-threatened species".
"One for Sorrow" is a traditional children's nursery rhyme about magpies. According to an old superstition, the number of magpies seen tells if one will have bad or good luck.
Leatherface is a character from The Texas Chainsaw Massacre series. He first appeared in The Texas Chain Saw Massacre (1974) as the mentally disabled member of a family of deranged cannibals, featuring his face masks and chainsaw. Created by Tobe Hooper and Kim Henkel, Leatherface was partially inspired by the crimes of Wisconsin murderer Ed Gein, in addition to confessions by serial killer Elmer Wayne Henley. The character has subsequently been represented in various other media, including novels, video games, and comic books; appearing in all nine films in the series.
Tony Angell is an American wildlife artist, environmental educator, and writer. He has lived in Seattle, Washington, since 1959.
The following is a list of episodes from the eleventh season of the PBS series, Mister Rogers' Neighborhood, which aired in 1981.
During the COVID-19 pandemic, face masks or coverings, including N95, FFP2, surgical, and cloth masks, have been employed as public and personal health control measures against the spread of SARS-CoV-2, the virus that causes COVID-19.
The wearing of non-medical face masks in public to lessen the transmission of COVID-19 in the United States was first recommended by the CDC on April 3, 2020, as supplemental to hygiene and appropriate social distancing. Throughout the pandemic, various states, counties, and municipalities have issued health orders requiring the wearing of non-medical face coverings — such as cloth masks — in spaces and businesses accessible to the public, especially when physical distancing is not possible.
