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When a student (human or parrot) answers a question about an object correctly, they receive that object as a reward instead of a food reward, which is often used in other training techniques. Irene Pepperberg said the reward system is crucial, because it is the only way that students can make the direct connection between the object and the ...
The 500 line segments defined above together form a shape in the Cartesian plane that resembles a bird with open wings. Looking at the line segments on the wings of the bird causes an optical illusion and may trick the viewer into thinking that the segments are curved lines. Therefore, the shape can also be considered as an optical artwork.
Examining the representation of numerosity in animals is a challenging task, since it is not possible to use language as a medium. Because of this, carefully designed experimental setups are required to differentiate between numerical abilities and other phenomena, such as the Clever Hans phenomenon, memorization of the single objects or perception of object size and time.
The California scrub jay hides caches of food and will later re-hide food if it was watched by another bird the first time, but only if the bird hiding the food has itself stolen food before from a cache. [72] A male Eurasian jay takes into account which food his bonded partner prefers to eat when feeding her during courtship feeding rituals. [73]
Let x be the number of cocks, y be the number of hens, and z be the number of chicks, then the problem is to find x, y and z satisfying the following equations: x + y +z = 100 5x + 3y + z/3 = 100. Obviously, only non-negative integer values are acceptable. Expressing y and z in terms of x we get y = 25 − (7/4)x z = 75 + (3/4)x
Avian foraging refers to the range of activities and behaviours exhibited by birds in their quest for food. In addition to their unique body adaptations, birds have a range of described behaviours that differ from the foraging behaviours of other animal groups. According to the foraging habitat, birds may be grouped into foraging guilds ...
Like any other food dye, natural food coloring comes in two forms: liquid or powdered. It’s all a matter of which ingredient you’re using to make the dye. It’s all a matter of which ...
The choosability (or list colorability or list chromatic number) ch(G) of a graph G is the least number k such that G is k-choosable. More generally, for a function f assigning a positive integer f(v) to each vertex v, a graph G is f-choosable (or f-list-colorable) if it has a list coloring no matter how one assigns a list of f(v) colors to ...