Feather color

Long plumes and tail feathers Colorful or patterned flight and body feathers Neutral-colored feather trim Down Whole or partial body with feathers... 

American Association of Textile Chemists and Colorists P.O. Box 12215 Research Triangle Park, NC 27709 Inter-Society Color Council U.S. Army Natick R D Center Att STRNC-ITC Natick, Mass. 01760 Friction Materials Friction Materials Standards Institute E210, Route 4 Paramus, NJ 07652 Feather Tanners Council of America 2501 M Street, NW Washington, D.C. 20037... 

Carotenoids are essential to plants for photosynthesis, acting in light harvesting and especially in protection against destructive photooxidation. Without carotenoids, photosynthesis in an oxygenic atmosphere would be impossible. Some animals use carotenoids for coloration, especially birds (yellow and red feathers), fish and a wide variety of invertebrate animals, where complexation with protein may modify then-colors to blue, green or purple. ... 

We can group animals into clusters according to how similar they are, comparing their key characteristics the more closely those characteristics match, the more similar are the two species. The choice of characteristics is inherently arbitrary, but we might include the number of legs, covered in fur or feathers, the speed of movement, size, color, carnivore/ vegetarian, and so on ... 

How Do Feathers Get Their Colors The Bird Site, Natural History Museum of Los Angeles County, http //www.lam.mus.ca.us/birds/guide/pg012.html... 

K.J. McGraw, M.D. Beebee, G.E. Hill and R.S. Parker, Lutein-based plumage coloration in songbirds is a consequence of selective pigment incorporation into feathers. Comp. Biochem. Physiol. Part B 135 (2003) 689-696. 

The diffraction of light that occurs in natural phenomena such as rainbows, peacock feathers, certain insects, and the colors that appear on the surfaces of some metals during heating are persistent motifs within a particular stage of the alchemical opus. The cauda pavonis (the peacock s tail) is the brief stage that heralds the final... 

Uroporphyrins I and III are both excreted in small amounts in the urine. Another excretion product is coproporphyrin III, in which all of the carboxymethyl side chains have been decarboxylated to methyl groups. The feathers of the tropical touraco are colored with copper(II) complex of coproporphyrin III and this... 

While some of the Mississippian textiles are of similar structure to the Middle Woodland textiles, others are very complex materials and are lace-like in appearance. Many of the materials from Etowah are preserved by mineralization, and display green-colored deposits on their surfaces. Bast fiber, rabbit hair, and feathers have been identified (2, 11). The textiles from these two sites selected for analysis are representative of the complexity of structure and fineness of yarns seen in the materials they provide evidence of the sophisticated technology of prehistoric people in all phases of fiber collection, processing, yarn spinning, fabric manufacture and, when present, coloration. 

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