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Left: turacin (red) and turacoverdin (green, with some structural blue iridescence at lower end) on the wing of Tauraco bannermani Right: carotenoids (red) and melanins (dark) on belly/wings of Ramphocelus bresilius. The colors of feathers are produced by pigments, by microscopic structures that can refract, reflect, or scatter selected ...
The brilliant iridescent colors of the peacock's tail feathers are created by structural coloration, as first noted by Isaac Newton and Robert Hooke.. Structural coloration in animals, and a few plants, is the production of colour by microscopically structured surfaces fine enough to interfere with visible light instead of pigments, although some structural coloration occurs in combination ...
Plumage (from Latin pluma 'feather') is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes.
Feathers containing melanin are stronger, Shultz said, which is why birds often have dark wing feathers to aid them in flight. Do colors change? Even within the same species, color can vary by age ...
In his 1665 book Micrographia, Robert Hooke describes the "fantastical" (structural, not pigment) colours of the Peacock's feathers: [3]. The parts of the Feathers of this glorious Bird appear, through the Microscope, no less gaudy then do the whole Feathers; for, as to the naked eye 'tis evident that the stem or quill of each Feather in the tail sends out multitudes of Lateral branches ...
The Guinea turaco's green coloration is due to the pigment turacoverdin. Turacoverdin is a unique copper uroporphyrin pigment responsible for the bright green coloration of several birds of the family Musophagidae, most notably the turaco. It is chemically related to turacin, a red pigment also found almost exclusively in turacos. [1]
1915 Single-Factored Dark-Green (a.k.a. Dark-Green) in France (where they were then commonly called 'Laurel' which is the French word for Bay (leaf &/or tree)) 1916 Double-Factored Dark-Green (a.k.a. Olive) in France. 1918–28 Respectively, Greywinged Green and Greywinged Blue appeared in England and continental Europe. 1920. Crest-Factor in ...
Feathers in humid environments have a greater bacterial load, and humid environments are more suitable for microbial growth; dark feathers or hair are more difficult to break down. [4] More resilient eumelanins (dark brown to black) are deposited in hot and humid regions, whereas in arid regions, pheomelanins (reddish to sandy color ...