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A crab-eating macaque using a stone. 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 ...
Indeed, in times of food shortage, storm disruptions or changing seasons which result in lower fruit yield (i.e. winter and autumn), the birds turn from primary consumer to generalist opportunistic predators, as frequent fecal examinations revealed the skeletal remains of entire birds, rodents and fish scales on a constant basis.
Étienne Jules Marey around 1880, by Félix Nadar. Étienne-Jules Marey (French: [etjɛn ʒyl maʁɛ]; 5 March 1830, Beaune, Côte-d'Or – 15 May 1904, [ 1 ] Paris) was a French scientist, physiologist and chronophotographer. His work was significant in the development of cardiology, physical instrumentation, aviation, cinematography and the ...
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Boids. Boids is an artificial life program, developed by Craig Reynolds in 1986, which simulates the flocking behaviour of birds, and related group motion. His paper on this topic was published in 1987 in the proceedings of the ACM SIGGRAPH conference. [1] The name "boid" corresponds to a shortened version of "bird-oid object", which refers to ...
A traditional scarecrow. Bird scarers is a blanket term used to describe devices designed for deterring birds by startling, confusing or otherwise repeling them, typically employed in commercial settings by farmers to dissuade birds from consuming and defecating on recently planted arable crops. Numerous bird scarers are also readily available ...
An adult bird which has been beak-trimmed as a chick. Beak trimming (also spelled as beak-trimming; informally as debeaking), or beak conditioning, is the partial removal of the beak of poultry, especially layer hens and turkeys, although it is also be performed on some quail and ducks. When multiple birds are confined in small spaces due to ...
Like many wrasses, Gomphosus varius is a sequential hermaphrodite. As it changes sex, its body shape, color intensity and pattern vary considerably. [5] The female is smaller than the male and its body color is duller. The anterior half or the first third of the body is light-colored: the belly and chest are pearly white, the scales of the ...
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