Peacock feathers why

While the estimated value for the frequencies for wing shaking and train shivering is within the range for the predicted value for animals. The frequencies of the vibrations reduced by train rattling decreased with the time in mating season. Once it gets to the peak amplitude. The frequency of the vibration does not affect by the following variables:. The tail feathers of the peacock interface weekly with each other during train rattling displays.

The peacocks that are majorly involved in courtship rituals vibrate their feathers having frequency ranges from 22 to 28 Hz. Peahens are usually very choosy when it comes to selecting a partner for mating. The plumage and the health of peacocks help them to attract more female peacocks towards them. The number of eyespots present on the feathers of peacocks indicates their health. The more eyespots on feathers the more will be the chance to have more mates. In a research study, the train rattling behavior of adult peacocks was compared with the train rattling behavior of sub-adult peacocks.

The frequency of the vibrations created by the train rattling of adult peacocks was lower than the frequencies of vibrations created by the subadult peacocks. The vibrations created by the feathers of peacocks are also affected by their morphological characters, for example, size of the body, length of the feathers, etc. The heavier the body, the more force will be required to shake their feathers. Peacocks also vibrate their feathers in the absence of peahens, commonly known as wing shaking.

Covert rattling is a rare behavior. The reason for this difference is the weight of the feathers of peacocks. Adult peacocks have heavier feathers than sub-adults. This is why peacocks spread their feathers to show females their manliness and attractiveness. There is a chance of damage to the long feathers of peacocks when they display and keep them erect for display. This risk is compensated by the unique composition and shape of their eyespots.

Pigment particles are embedded into the newly grown feathers during the molting season. They absorb light of certain wavelengths, or disperse the reflected light, and so contribute to the color of the plumage.

Colors due to pigments are explained in the section about organic pigments. Here, we concentrate on structural colors caused by interference, which we can see in certain butterflies and moths, and most spectacularly in peacocks. Each feather consists of thousands of flat branches as shown above in the detail. When light shines on the feather, we see thousands of glimmering colored spots, each caused by minuscule bowl-shaped indentations.

Stronger magnification reveals microscopic lamellae thin plate-like layers at the bottom of the indentations. As with butterfly wings, the regular pattern of the lamellae leads to interference phenomena and iridescent colors. Why it's so hard to treat pain in infants. This wild African cat has adapted to life in a big city. Animals Wild Cities This wild African cat has adapted to life in a big city Caracals have learned to hunt around the urban edges of Cape Town, though the predator faces many threats, such as getting hit by cars.

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