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Over 100 common names for the northern flicker are known, including yellowhammer (not to be confused with the Eurasian yellowhammer (Emberiza citrinella)), clape, gaffer woodpecker, harry-wicket, [2] heigh-ho, wake-up, walk-up, wick-up, yarrup, and gawker bird. Many of these names derive from attempts to imitate some of its calls. It is the ...
Flickr was launched on February 10, 2004, by Ludicorp, a Vancouver-based company founded by Stewart Butterfield and Caterina Fake. The service emerged from tools originally created for Ludicorp's Game Neverending, a web-based massively multiplayer online game. Flickr proved a more feasible project, and ultimately Game Neverending was shelved. [14]
One species, the Bermuda flicker, is extinct. [1] The family's taxonomy is unsettled; the Clements taxonomy lists 235 species [2] and BirdLife International's Handbook of the Birds of the World lists 254 [3]. This list is presented according to the IOC taxonomic sequence and can also be sorted alphabetically by common name and binomial.
The genus Colaptes was introduced by the Irish zoologist Nicholas Aylward Vigors in 1825 with the northern flicker (Colaptes auratus) as the type species. [2] The name is from the Ancient Greek κολάπτης (kolaptēs) meaning "chiseller". [3] The genus forms part of the woodpecker subfamily Picinae and has a sister relationship to the ...
Ludicorp also designed Flickr to be more focused on content, rather than as a social interaction site, unlike a platform such as Facebook. [11] Users can follow other users in a non-mutual subscription model, like YouTube. [11] Furthermore, content can be viewed without the subscription, another first for social media sites in 2004. [11]
Larger movement of the viewer or the print causes the image to flip from one image to another (the "flip effect"). An example of this is the lenticular print of hockey player Mario Tremblay at Centre Mario-Tremblay in Alma, Quebec , where he is transformed from a minor hockey playing boy as an Alma Eagle into the professional hockey playing man ...
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In visual perception, flicker is a human-visible change in luminance of an illuminated surface or light source which can be due to fluctuations of the light source itself, or due to external causes such as due to rapid fluctuations in the voltage of the power supply (power-line flicker) or incompatibility with an external dimmer.