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Like many precocial hatchlings, domestic chickens are already covered with a coat of downy feathers when they hatch. The word down comes from the Old Norse word dúnn, which had the same meaning as its modern equivalent. [1] The down feather is considered to be the most "straightforward" of all feather types. [2]
The tail feathers are used to control flight acting as rudder and brake, only some of these feathers are as firmly attached as the bird's primaries. Contour feathers are arranged on the body of the bird in the manner of roof tiles. The tips of these feathers are waterproof and help protect the bird from the elements, while the inner parts of ...
The study of feathers is called plumology (or plumage science). [6] [7] People use feathers in many ways that are practical, cultural, and religious. Feathers are both soft and excellent at trapping heat; thus, they are sometimes used in high-class bedding, especially pillows, blankets, and mattresses.
A pennaceous feather has a stalk or quill. [2] Its basal part, called a calamus, is embedded in the skin.The calamus is hollow and has pith formed from the dry remains of the feather pulp, and the calamus opens below by an inferior umbilicus and above by a superior umbilicus. [2]
Long crest feathers are sometimes called quill feathers. [119] Also defined: recumbent crests and recursive crests . A type of semiplume feather with a long rachis with barbs on either side, that often presents as a prominent tuft on the crown and (or through) the neck and upper back .
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The parents share incubating and brooding duties until the chick is about a week old, after which they often stand guard rather than brood. The young are semi-altricial—they are helpless when born but are covered in downy feathers (truly altricial birds are born naked), and their eyes are open at birth. Developing quickly, the chicks are ...
This audio plug-in, which allows a person to transform their voice into another person's voice, makes it appear as though Lee was back in the recording booth at age 13 singing the song in Spanish.