Pleochroism is an optical phenomenon in which a substance has different colors when observed at different angles, especially with polarized light.
The orange-breasted green pigeon is a pigeon found across tropical Asia south of the Himalaya across parts of the Indian Subcontinent and Southeast Asia. Like other green pigeons, it feeds mainly on small fruit. They may be found in pairs or in small flocks, foraging quietly and moving slowly on trees. The nape is blue-grey and the crown is yellowish green. The uppertail coverts are bronzed and the undertail coverts are unmarked rufous. The male has a pinkish band on the upper breast with a broader orange one below while the female has a bright yellow breast.
The variable sunbird or yellow-bellied sunbird, formerly Nectarinia venusta, is a sunbird. The sunbirds are a group of small Old World passerine birds which feed largely on nectar, although they will also take insects, especially when feeding young. Flight is fast and direct on their short wings. Most species can take nectar by hovering like a hummingbird, but usually perch to feed most of the time.
A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or color. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. For example, most white diamonds are discounted in price when more yellow hue is detectable, while intense pink diamonds or blue diamonds can be dramatically more valuable. Of all colored diamonds, red diamonds are the rarest. The Aurora Pyramid of Hope displays a spectacular array of naturally colored diamonds, including red diamonds.
The tabasco pepper is a variety of the chili pepper species Capsicum frutescens originating in Mexico. It is best known through its use in Tabasco sauce, followed by peppered vinegar.
The yellow-faced parrot, formerly also known as the yellow-faced amazon, is the only species of the genus Alipiopsitta. It is a Neotropical parrot, and was classified in the genus Amazona for many years. It is a predominantly green and yellow-plumaged bird with a yellow head. It is a semi-nomadic species found in the cerrado region of Brazil and adjacent Bolivia. As the yellow-faced parrot has disappeared from parts of its former range due to habitat destruction and generally occurs in low densities, it was considered vulnerable by the IUCN, but it remains locally fairly common, occurs in several protected areas and can survive in fragmented habitats, leading to its downlisting to near-threatened.
Gymnopilus luteofolius, known as the yellow-gilled gymnopilus, is a large and widely distributed mushroom that grows in dense clusters on dead hardwoods and conifers. It grows in late July to November in the east and in the winter on the west coast of North America. It has a rusty orange spore print and a bitter taste.
The Yucatan amazon, also known as the yellow-lored amazon, Yucatan parrot or yellow-lored parrot is a species of bird in subfamily Arinae of the family Psittacidae, the African and New World parrots. It is found in Belize, Guatemala, Honduras, and Mexico.
The fairy lorikeet is a species of parrot in the family Psittaculidae. Other common names include the little red lorikeet and the little red lory. Found in New Guinea, its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. Its colouration is mainly red with some yellow on the throat and green on the wings. Two subspecies are recognised, C. p. pulchella and C. p. rothschildi.
Parvipsitta is a parrot genus of in the family Psittaculidae. They are native to Australia. The group was previously placed in the genus Glossopsitta.
The olivaceous piculet is a species of bird in subfamily Picumninae of the woodpecker family Picidae. It is found from Guatemala south through Central America and western South America to Peru.
Gymnopilus aeruginosus, also known as the magic blue gym, is a mushroom-forming fungus that grows in clusters on dead wood and wood chip mulch. It is widely distributed and common in the Pacific Northwest. It has a rusty orange spore print and a bitter taste and contains the psychedelic chemical psilocybin. It was given its current name by mycologist Rolf Singer in 1951.
Gymnopilus luteus, known as the yellow gymnopilus, is a widely distributed mushroom-forming fungus of the Eastern United States. It contains the hallucinogens psilocybin and psilocin. It is often mistaken for G. speciosissimus and G. subspectabilis.
Nathalis iole, the dainty sulphur or dwarf yellow, is a North American butterfly in the family Pieridae.
Amanita flavoconia, commonly known as yellow patches, yellow wart, orange amanita, yellow-dust amanita or the American yellow dust amanita, is a species of mushroom in the family Amanitaceae. It has an orangish-yellow cap with yellowish-orange patches or warts, a yellowish-orange annulus, and a white to orange stem. Common and widespread throughout eastern North America, Amanita flavoconia grows on the ground in broad-leaved and mixed forests, especially in mycorrhizal association with hemlock.
The ISCC–NBS System of Color Designation is a system for naming colors based on a set of 13 basic color terms and a small set of adjective modifiers. It was first established in the 1930s by a joint effort of the Inter-Society Color Council (ISCC), made up of delegates from various American trade organizations, and the National Bureau of Standards (NBS), a US government agency. As suggested in 1932 by the first chairman of the ISCC, the system's goal is to be "a means of designating colors in the United States Pharmacopoeia, in the National Formulary, and in general literature ... such designation to be sufficiently standardized as to be acceptable and usable by science, sufficiently broad to be appreciated and used by science, art, and industry, and sufficiently commonplace to be understood, at least in a general way, by the whole public." The system aims to provide a basis on which color definitions in fields from fashion and printing to botany and geology can be systematized and regularized, so that each industry need not invent its own incompatible color system.
Papaver pygmaeum is a species of poppy known by the common name alpine glacier poppy. It is native to North America, where it can be found in British Columbia, Alberta, and Montana. It has a narrow distribution around the intersection of the three borders. There are about 23 known occurrences, mostly in Montana, with some in Alberta and one in British Columbia. It is present in a number of locations within Glacier National Park.
Amanita basii is a mushroom of the family Amanitaceae.
Amanita flavorubens, also known as the yellow American blusher or the yellow American blushing amanita, is a species of the genus Amanita.
