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Carotenosis is a benign and reversible medical condition where an excess of dietary carotenoids results in orange discoloration of the outermost skin layer. The discoloration is most easily observed in light-skinned people and may be mistaken for jaundice.
Rigid egg shells, except in turtles, are composed of calcite. Since calcitic and aragonitic structures do not luminesce, signs of luminescence point to alterations to the chemical composition or structure of the shell. Magnesium-Calcite is sometimes replaced by Manganese-Calcite, which luminesces bright red-orange or yellow orange.
For example, the bright yellow of an American goldfinch, the startling orange of a juvenile red-spotted newt, the deep red of a cardinal and the pink of a flamingo are all produced by carotenoid pigments synthesized by plants. In the case of the flamingo, the bird eats pink shrimps, which are themselves unable to synthesize carotenoids.
The yolk of the backyard egg is bright orange. Free-range eggs may be broader in definition and have more of an orange colour to their yolks [30] owing to the abundance of greens and insects in the birds' diet if actually allowed substantial time outdoors to roam. Also known as pasture-raised eggs However, an orange yolk is not guaranteed that ...
The female lays from five to sixteen soft oval eggs, about 5/8 of an inch long, in hollows of trees, or in holes in the soil which they have burrowed, afterward covering them up. The young appear in about eight or nine weeks. In a hot sunny day a solitary bloodsucker may be seen on a twig or on a wall, basking in the sun, with mouth wide open.
The ventral side of the fourth abdominal segment bears a black band in the male and two black spots in the female. Juveniles are born mostly red with black antennae and a few black spots, throughout growth the black spots are developed as well as wing pads. Eggs of this insect are bright orange and easily detectable. [8] [9]
Lead study author Dr. Ernest Di Maio and his colleagues cooked 160 eggs, testing the different egg-boiling techniques and observing the changes in heat throughout each of the eggs.
The striking bright orange juvenile stage, which is land-dwelling, is known as a red eft. Some sources blend the general name of the species and that of the red-spotted newt subspecies into the eastern red-spotted newt (although there is no "western" one). [5] [6]