To streamline the blades of an aircraft's propeller by rotating them perpendicular to the axis of the propeller when the engine is shut down so that the propeller doesn't windmill as the aircraft flies
After striking the bird, the pilot feathered the left, damaged engine's propeller.
A branching, hair-like structure that grows on the wings of birds that allows their wings to create lift
Nesting birds pluck some of their own feathers to line the nest, but feather plucking in pet birds is entirely different.
Kind; nature; species; from the (Atasözü)ial phrase, "Birds of a feather," that is, of the same species
turning an oar parallel to the water between pulls the light horny waterproof structure forming the external covering of birds turn the oar, while rowing turn the paddle; in canoeing cover or fit with feathers join tongue and groove, in carpentry
to ruffle someone's feathers: see ruffle. Component structure of the outer covering and flight surfaces of all modern birds. Unique to birds, feathers apparently evolved from the scales of birds' reptilian ancestors. Feathers are variously specialized for insulation, flight, formation of body contours, display, and sensory reception. Unlike the hair of most mammals, feathers do not cover the entire skin surface of birds but are arranged in symmetrical tracts alternating with areas of bare skin, which may contain the small, soft feathers called down. A typical feather consists of a central shaft (rachis), with serial paired branches (barbs) forming a flattened, usually curved surface the vane. The barbs possess further branches, the barbules, and the barbules of adjacent barbs are attached to one another by hooks, stiffening the vane
To rotate the blade of an oar while rowing so the blade is parallel to the surface of the water
Body covering of birds, important for flight and warmth, and similar to hair and scales Like hair and scales, they are made from a substance called keratin and grow from the skin