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Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies. In this, distances vary for individuals from the far point —the maximum distance from the eye for which a clear image of an object can be seen, to the near point —the minimum distance for a ...
Even without moving their eyes, some birds have a 360-degree field of view. Some other animals – usually, but not always, predatory animals – have their two eyes positioned on the front of their heads, thereby allowing for binocular vision and reducing their field of view in favor of stereopsis.
Tetrachromacy. The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [ 1] Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types ...
Tool use by non-humans. Tool use by non-humans is a phenomenon in which a non-human animal uses any kind of tool in order to achieve a goal such as acquiring food and water, grooming, combat, defence, communication, recreation or construction. Originally thought to be a skill possessed only by humans, some tool use requires a sophisticated ...
The most things you have for them to look at is really fun, especially when they’re trying on glasses for the first time,” Crull said. Truffles gets to sit in on an “amazing moment,” in a ...
Most people get these mite bites in the late summer and early fall when the species is most populated. "Studies have shown that mites can fall from trees in numbers of up to 370,000 per day ...
Sky burial. Sky burial ( Tibetan: བྱ་གཏོར་, Wylie: bya gtor, lit. "bird-scattered" [ 1]) is a funeral practice in which a human corpse is placed on a mountaintop to decompose while exposed to the elements or to be eaten by scavenging animals, especially carrion birds like vultures and corvids.
Its popularity led to many spin-offs; versions of Angry Birds created for PCs and video game consoles, a market for merchandise featuring its characters, Angry Birds Toons, a televised animated series, and two films; The Angry Birds Movie and its sequel The Angry Birds Movie 2, with a third film currently in production. By January 2014, there ...