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The feather surface is the home for some ectoparasites, notably feather lice (Phthiraptera) and feather mites. Feather lice typically live on a single host and can move only from parents to chicks, between mating birds, and, occasionally, by phoresy. This life history has resulted in most of the parasite species being specific to the host and ...
Calamus, the hollow shaft of a feather, also known as the quill; Acorus calamus, the sweet flag, a tall wetland plant, commonly referred to as calamus in herbal medicine;
Peacock tail feather. The conservation and restoration of feathers is the practice of maintaining and preserving feathers or featherwork objects, and requires knowledge of feather anatomy, properties, specialized care procedures, and environmental influences. This practice may be approached through preventive and/or interventive techniques.
The shaft of a flight feather is long and hollow, making it an obvious candidate for being crafted into a pen. The process of making a quill from a feather involves curing the shaft to harden it, then fashioning its tip into a nib using a pen knife or other small cutting tool.
The individual structures growing out of the shaft that collectively make up the vanes of the feathers, more or less interconnected by the hooklets of the barbules, extending from each side of the distal part of the feather's shaft known as the rachis. The central axis of a barb is known as the ramus. [8] barbules
Each feather consists of a central shaft, loose barbs on its sides, and an ocelli or “eyespot” pattern at the end. The overall effect is an iridescent pattern of golds, greens, browns, and ...
Rachis can also mean the central shaft of pennaceous feathers. In the gonad of the invertebrate nematode Caenorhabditis elegans, a rachis is the central cell-free core or axis of the gonadal arm of both adult males and hermaphrodites where the germ cells have achieved pachytene and are attached to the walls of the gonadal tube.
This feather can grow as a new feather during the bird's infancy, or grow to replace one from moulting. The pin feather looks somewhat like a feather shaft. However, unlike a fully developed feather, the pin feather has a blood supply flowing through it; at this stage, it may also be called a blood feather. As such, if the pin feather is ...