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The rachis and attached veins make up the spathe. The opposite of the rachis is the calamus, which anchors the feather to the body and is moved by attached dermal muscles. There are many different types of feathers that mostly follow this basic design with few variations based on evolutionary needs. [1]
Feather variations. Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates [1] [2] and an example of a complex evolutionary novelty. [3]
Quill and a parchment. A quill is a writing tool made from a moulted flight feather (preferably a primary wing-feather) of a large bird.Quills were used for writing with ink before the invention of the dip pen/metal-nibbed pen, the fountain pen, and, eventually, the ballpoint pen.
Modern reproduction of Feather headdress Moctezuma II; Museo Nacional de Antropología e Historia, México. Mexican featherwork, also called "plumería", was an important artistic and decorative technique in the pre-Hispanic and colonial periods in what is now Mexico.
The "red feather cloak" [83] was apparently only a small one, though probably from the Cook voyage, obtained from the Leverian sale of 1806. The item is added to the Companion guide to the museum in its 1807 edition. [84] [f] The Bullock also acquired a red feather cloak and helmet from Rev. Adam Clarke, but the original provenance of these is ...
Red kite (Milvus milvus) in flight, showing remiges and rectrices. Flight feathers (Pennae volatus) [1] are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the wings or tail of a bird; those on the wings are called remiges (/ ˈ r ɛ m ɪ dʒ iː z /), singular remex (/ ˈ r iː m ɛ k s /), while those on the tail are called rectrices (/ ˈ r ɛ k t r ...
The design for mahiole is a basketry frame cap with a central crest running from the center of the forehead to the nape of the neck. However the variation in the design is considerable with the colour and arrangement of the feather patterns differing and the crest varying in height and thickness.
When preening, a bird (such as this red lory) draws individual feathers through its beak, realigning and re-interlocking the barbules.. Preening is a maintenance behaviour found in birds that involves the use of the beak to position feathers, interlock feather barbules that have become separated, clean plumage, and keep ectoparasites in check.