Olympic symbols the idea" that the Olympic Movement is international and welcomes all countries of the world to join. As can be read in the Olympic Charter, the Olympic symbol represents the union of the "five continents" of the world and the meeting of athletes from throughout the world at the Olympic Games. However, no continent is represented by any specific ring. Prior to 1951, the official handbook stated that each colour corresponded to a particular continent: blue for Europe, yellow for Asia, black for Africa, green for Australia and Oceania, and red for the Americas; this was removed because there was
Budgerigar colour genetics from oranges, peaches, pinks to reds. When these feathers are exposed to a white light source, such as sunlight, only the blue part of the spectrum is reflected by the eumelanin granules. This reflected blue light passes through the yellow pigment layer, resulting in the green colouration known as "lightgreen" in only the budgerigar and/or "green" in any other naturally green coloured parrot species. The many colour variations of budgerigars, such as albino, blue, cinnamon, Clearwinged, the various Fallows, Grey, Greygreen, Greywing, Lutino, Mauve, Olive, Opaline, Spangled, Suffused and Violet are the result of mutations that have occurred within specific