EVERYDAY SCIENCE

Detailed explanation-1: -Semiplume Feathers-These feathers are the cross between the contour feather and the down feather. Interlocking in barbs is absent. These feathers mainly provide insulation to the birds. Flight Feathers-These feathers are present on the tails and the wings.

Detailed explanation-2: -A great many feathers are the short, fluffy kind, the down, whose purpose is to insulate the bird from the cold. Birds survive in sub-zero weather by fluffing their feathers, creating layers of air and feathers.

Detailed explanation-3: -Down insulation is made from goose or duck plumage – the lofty, fluffy stuff underneath the feathers. It is an undercoating, or a natural midlayer. Nature’s best insulation, down creates high-loft clusters that keep air and body heat from escaping.

Detailed explanation-4: -Down and feathers come from the exact same place-either a goose or a duck. Feathers are a bird’s outer layer (wings & back) and down fibres are beneath the protective feather covering that is used for insulation. Down material lasts longer, is more expensive, and is softer.

Detailed explanation-5: -Because down is insulating, light, and compressible, it is an ideal material to make warm jackets, vests, gloves, sleeping bags, and quilts.