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Unformatted text preview: Feathers that can take up the pigment What affects carotenoid based color 1. Carotenoid access & selective Foraging House finches preferred brightly colored red, prange and yellow food items compared to 2. Nutritional condition 3. Genetics- extent To see the blue, you need the black. Melanin layer absorbs all the blue. Albino Jay has no melanin layer, so all is reflected back. SO now you see a white Jay. Two types of Structural coloration. 1. Non-irridescent- doesn’t change with the angle of viewing 2. Irridescent- changes with the angle of viewing. When u have a color u look for a eak. . when u don’t u see a slope b/c they absorb! Paper: Thy are relatively the same....
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- Spring '09
- integument Feathers, Albino Jay, Jay., daily carotenoids Ability, Intestinal absorption